77306368 has 20 divisors (see below), whose sum is σ = 154462770. Its totient is φ = 38652928.

The previous prime is 77306321. The next prime is 77306387. The reversal of 77306368 is 86360377.

It can be written as a sum of positive squares in only one way, i.e., 67371264 + 9935104 = 8208^2 + 3152^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77306368.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74983 + ... + 76006.

Almost surely, 2^77306368 is an apocalyptic number.

It is an amenable number.

77306368 is a deficient number, since it is larger than the sum of its proper divisors (77156402).

77306368 is an equidigital number, since it uses as much as digits as its factorization.

77306368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151007 (or 150991 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 77306368 is about 8792.4039943579. The cubic root of 77306368 is about 425.9955769633.

The spelling of 77306368 in words is "seventy-seven million, three hundred six thousand, three hundred sixty-eight".