74989910 has 16 divisors (see below), whose sum is σ = 137854656. Its totient is φ = 29357568.

The previous prime is 74989909. The next prime is 74989921. The reversal of 74989910 is 1998947.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79307 + ... + 80246.

It is an arithmetic number, because the mean of its divisors is an integer number (8615916).

Almost surely, 2^74989910 is an apocalyptic number.

74989910 is a deficient number, since it is larger than the sum of its proper divisors (62864746).

74989910 is a wasteful number, since it uses less digits than its factorization.

74989910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159607.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 74989910 is about 8659.6714718285. The cubic root of 74989910 is about 421.6974201681.

The spelling of 74989910 in words is "seventy-four million, nine hundred eighty-nine thousand, nine hundred ten".