74649915 has 24 divisors (see below), whose sum is σ = 133857360. Its totient is φ = 38439744.

The previous prime is 74649899. The next prime is 74649923. The reversal of 74649915 is 51994647.

It is not a de Polignac number, because 74649915 - 2⁴ = 74649899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 23 ways as a sum of consecutive naturals, for example, 27297 + ... + 29906.

It is an arithmetic number, because the mean of its divisors is an integer number (5577390).

Almost surely, 2^74649915 is an apocalyptic number.

74649915 is a deficient number, since it is larger than the sum of its proper divisors (59207445).

74649915 is a wasteful number, since it uses less digits than its factorization.

74649915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57243 (or 57240 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 74649915 is about 8640.0182291474. The cubic root of 74649915 is about 421.0591465508.

The spelling of 74649915 in words is "seventy-four million, six hundred forty-nine thousand, nine hundred fifteen".