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7041985 = 51408397
BaseRepresentation
bin11010110111001111000001
3111020202210021
4122313033001
53300320420
6410533441
7113566366
oct32671701
914222707
107041985
113a7a825
122437281
1315c7372
14d1446d
159417aa
hex6b73c1

7041985 has 4 divisors (see below), whose sum is σ = 8450388. Its totient is φ = 5633584.

The previous prime is 7041977. The next prime is 7042001. The reversal of 7041985 is 5891407.

It is a happy number.

7041985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4456321 + 2585664 = 2111^2 + 1608^2 .

It is a cyclic number.

It is not a de Polignac number, because 7041985 - 23 = 7041977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7041985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704194 + ... + 704203.

It is an arithmetic number, because the mean of its divisors is an integer number (2112597).

Almost surely, 27041985 is an apocalyptic number.

It is an amenable number.

7041985 is a deficient number, since it is larger than the sum of its proper divisors (1408403).

7041985 is a wasteful number, since it uses less digits than its factorization.

7041985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408402.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 7041985 is about 2653.6738684322. The cubic root of 7041985 is about 191.6748057875.

The spelling of 7041985 in words is "seven million, forty-one thousand, nine hundred eighty-five".

Divisors: 1 5 1408397 7041985