74479688 has 8 divisors (see below), whose sum is σ = 139649430. Its totient is φ = 37239840.

The previous prime is 74479687. The next prime is 74479697. The reversal of 74479688 is 88697447.

It can be written as a sum of positive squares in only one way, i.e., 74269924 + 209764 = 8618^2 + 458^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (74479687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4654973 + ... + 4654988.

Almost surely, 2^74479688 is an apocalyptic number.

It is an amenable number.

74479688 is a deficient number, since it is larger than the sum of its proper divisors (65169742).

74479688 is a wasteful number, since it uses less digits than its factorization.

74479688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9309967 (or 9309963 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 53.

The square root of 74479688 is about 8630.1615280364. The cubic root of 74479688 is about 420.7388506468.

The spelling of 74479688 in words is "seventy-four million, four hundred seventy-nine thousand, six hundred eighty-eight".