74979648 has 56 divisors (see below), whose sum is σ = 220431360. Its totient is φ = 24992640.

The previous prime is 74979637. The next prime is 74979713. The reversal of 74979648 is 84697947.

It is a happy number.

It is a super-2 number, since 2×74979648² = 11243895228407808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 74979594 and 74979603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19968 + ... + 23423.

Almost surely, 2^74979648 is an apocalyptic number.

It is an amenable number.

74979648 is an abundant number, since it is smaller than the sum of its proper divisors (145451712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74979648 is a wasteful number, since it uses less digits than its factorization.

74979648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43412 (or 43396 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 74979648 is about 8659.0789348521. The cubic root of 74979648 is about 421.6781835519.

The spelling of 74979648 in words is "seventy-four million, nine hundred seventy-nine thousand, six hundred forty-eight".