74769915 has 32 divisors (see below), whose sum is σ = 131415552. Its totient is φ = 36000000.

The previous prime is 74769869. The next prime is 74769931. The reversal of 74769915 is 51996747.

It is a happy number.

It is not a de Polignac number, because 74769915 - 2⁸ = 74769659 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23415 + ... + 26415.

It is an arithmetic number, because the mean of its divisors is an integer number (4106736).

Almost surely, 2^74769915 is an apocalyptic number.

74769915 is a deficient number, since it is larger than the sum of its proper divisors (56645637).

74769915 is a wasteful number, since it uses less digits than its factorization.

74769915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171.

The product of its digits is 476280, while the sum is 48.

The square root of 74769915 is about 8646.9598703822. The cubic root of 74769915 is about 421.2846437827.

It can be divided in two parts, 7476 and 9915, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 74769915 in words is "seventy-four million, seven hundred sixty-nine thousand, nine hundred fifteen".