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6974381 = 38917929
BaseRepresentation
bin11010100110101110101101
3111010100001102
4122212232231
53241140011
6405252445
7113165321
oct32465655
914110042
106974381
113a33a57
122404125
1315a266b
14cd7981
1592b73b
hex6a6bad

6974381 has 4 divisors (see below), whose sum is σ = 6992700. Its totient is φ = 6956064.

The previous prime is 6974371. The next prime is 6974399. The reversal of 6974381 is 1834796.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2706025 + 4268356 = 1645^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 6974381 - 214 = 6957997 is a prime.

It is a super-2 number, since 2×69743812 = 97283980666322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6974321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8576 + ... + 9353.

It is an arithmetic number, because the mean of its divisors is an integer number (1748175).

Almost surely, 26974381 is an apocalyptic number.

It is an amenable number.

6974381 is a deficient number, since it is larger than the sum of its proper divisors (18319).

6974381 is a wasteful number, since it uses less digits than its factorization.

6974381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18318.

The product of its digits is 36288, while the sum is 38.

The square root of 6974381 is about 2640.9053371903. The cubic root of 6974381 is about 191.0594645034.

The spelling of 6974381 in words is "six million, nine hundred seventy-four thousand, three hundred eighty-one".

Divisors: 1 389 17929 6974381