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6979045 = 51395809
BaseRepresentation
bin11010100111110111100101
3111010120110011
4122213313211
53241312140
6405330221
7113215033
oct32476745
914116404
106979045
113a37507
122406971
1315a4818
14cd9553
1592ccea
hex6a7de5

6979045 has 4 divisors (see below), whose sum is σ = 8374860. Its totient is φ = 5583232.

The previous prime is 6979033. The next prime is 6979057. The reversal of 6979045 is 5409796.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6979033) and next prime (6979057).

It can be written as a sum of positive squares in 2 ways, for example, as 3771364 + 3207681 = 1942^2 + 1791^2 .

It is a cyclic number.

It is not a de Polignac number, because 6979045 - 25 = 6979013 is a prime.

It is a super-2 number, since 2×69790452 = 97414138224050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 6978989 and 6979007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697900 + ... + 697909.

It is an arithmetic number, because the mean of its divisors is an integer number (2093715).

Almost surely, 26979045 is an apocalyptic number.

It is an amenable number.

6979045 is a deficient number, since it is larger than the sum of its proper divisors (1395815).

6979045 is a wasteful number, since it uses less digits than its factorization.

6979045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395814.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 6979045 is about 2641.7882201267. The cubic root of 6979045 is about 191.1020442812.

The spelling of 6979045 in words is "six million, nine hundred seventy-nine thousand, forty-five".

Divisors: 1 5 1395809 6979045