74768690 has 16 divisors (see below), whose sum is σ = 137123928. Its totient is φ = 29342976.

The previous prime is 74768651. The next prime is 74768719. The reversal of 74768690 is 9686747.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59706529 + 15062161 = 7727^2 + 3881^2 .

It is a super-2 number, since 2×74768690² = 11180714008632200, which contains 22 as substring.

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, 70007 + ... + 71066.

Almost surely, 2^74768690 is an apocalyptic number.

74768690 is a deficient number, since it is larger than the sum of its proper divisors (62355238).

74768690 is a wasteful number, since it uses less digits than its factorization.

74768690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141133.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 74768690 is about 8646.8890359481. The cubic root of 74768690 is about 421.2823430511.

The spelling of 74768690 in words is "seventy-four million, seven hundred sixty-eight thousand, six hundred ninety".