77045930 has 16 divisors (see below), whose sum is σ = 149350824. Its totient is φ = 28447680.

The previous prime is 77045897. The next prime is 77045939. The reversal of 77045930 is 3954077.

It can be written as a sum of positive squares in 4 ways, for example, as 57957769 + 19088161 = 7613^2 + 4369^2 .

It is not an unprimeable number, because it can be changed into a prime (77045939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296201 + ... + 296460.

Almost surely, 2^77045930 is an apocalyptic number.

77045930 is a deficient number, since it is larger than the sum of its proper divisors (72304894).

77045930 is a wasteful number, since it uses less digits than its factorization.

77045930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592681.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 77045930 is about 8777.5811018754. The cubic root of 77045930 is about 425.5166588571.

The spelling of 77045930 in words is "seventy-seven million, forty-five thousand, nine hundred thirty".