74972915 has 16 divisors (see below), whose sum is σ = 92951040. Its totient is φ = 58008960.

The previous prime is 74972903. The next prime is 74972929. The reversal of 74972915 is 51927947.

It is not a de Polignac number, because 74972915 - 2⁶ = 74972851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32366 + ... + 34604.

It is an arithmetic number, because the mean of its divisors is an integer number (5809440).

Almost surely, 2^74972915 is an apocalyptic number.

74972915 is a deficient number, since it is larger than the sum of its proper divisors (17978125).

74972915 is a wasteful number, since it uses less digits than its factorization.

74972915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462.

The product of its digits is 158760, while the sum is 44.

The square root of 74972915 is about 8658.6901434339. The cubic root of 74972915 is about 421.6655612637.

The spelling of 74972915 in words is "seventy-four million, nine hundred seventy-two thousand, nine hundred fifteen".