74860857 has 12 divisors (see below), whose sum is σ = 110173284. Its totient is φ = 48965280.

The previous prime is 74860829. The next prime is 74860889. The reversal of 74860857 is 75806847.

It can be written as a sum of positive squares in 2 ways, for example, as 45441081 + 29419776 = 6741^2 + 5424^2 .

It is not a de Polignac number, because 74860857 - 2⁸ = 74860601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74862857) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 77994 + ... + 78947.

It is an arithmetic number, because the mean of its divisors is an integer number (9181107).

Almost surely, 2^74860857 is an apocalyptic number.

It is an amenable number.

74860857 is a deficient number, since it is larger than the sum of its proper divisors (35312427).

74860857 is a wasteful number, since it uses less digits than its factorization.

74860857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157000 (or 156997 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 74860857 is about 8652.2168835507. The cubic root of 74860857 is about 421.4553762023.

The spelling of 74860857 in words is "seventy-four million, eight hundred sixty thousand, eight hundred fifty-seven".