74686312 has 8 divisors (see below), whose sum is σ = 140036850. Its totient is φ = 37343152.

The previous prime is 74686309. The next prime is 74686327. The reversal of 74686312 is 21368647.

It can be written as a sum of positive squares in only one way, i.e., 66357316 + 8328996 = 8146^2 + 2886^2 .

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

It is a super-2 number, since 2×74686312² = 11156090400322688, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4667887 + ... + 4667902.

Almost surely, 2^74686312 is an apocalyptic number.

It is an amenable number.

74686312 is a deficient number, since it is larger than the sum of its proper divisors (65350538).

74686312 is a wasteful number, since it uses less digits than its factorization.

74686312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9335795 (or 9335791 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 74686312 is about 8642.1242758942. The cubic root of 74686312 is about 421.1275672570.

The spelling of 74686312 in words is "seventy-four million, six hundred eighty-six thousand, three hundred twelve".