74999956 has 12 divisors (see below), whose sum is σ = 131328820. Its totient is φ = 37477440.

The previous prime is 74999933. The next prime is 74999959. The reversal of 74999956 is 65999947.

It can be written as a sum of positive squares in 2 ways, for example, as 74304400 + 695556 = 8620^2 + 834^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 74999956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74999959) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3496 + ... + 12736.

Almost surely, 2^74999956 is an apocalyptic number.

It is an amenable number.

74999956 is a deficient number, since it is larger than the sum of its proper divisors (56328864).

74999956 is a wasteful number, since it uses less digits than its factorization.

74999956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274 (or 11272 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 58.

The square root of 74999956 is about 8660.2514975028. The cubic root of 74999956 is about 421.7162501819.

Subtracting from 74999956 its reverse (65999947), we obtain a palindrome (9000009).

The spelling of 74999956 in words is "seventy-four million, nine hundred ninety-nine thousand, nine hundred fifty-six".