74912085 has 12 divisors (see below), whose sum is σ = 129847692. Its totient is φ = 39953088.

The previous prime is 74912077. The next prime is 74912111. The reversal of 74912085 is 58021947.

It can be written as a sum of positive squares in 2 ways, for example, as 16573041 + 58339044 = 4071^2 + 7638^2 .

It is not a de Polignac number, because 74912085 - 2³ = 74912077 is a prime.

It is a super-2 number, since 2×74912085² = 11223640958094450, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 832312 + ... + 832401.

It is an arithmetic number, because the mean of its divisors is an integer number (10820641).

Almost surely, 2^74912085 is an apocalyptic number.

It is an amenable number.

74912085 is a deficient number, since it is larger than the sum of its proper divisors (54935607).

74912085 is a wasteful number, since it uses less digits than its factorization.

74912085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664724 (or 1664721 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 74912085 is about 8655.1767746245. The cubic root of 74912085 is about 421.5514895960.

The spelling of 74912085 in words is "seventy-four million, nine hundred twelve thousand, eighty-five".