628077896 has 8 divisors (see below), whose sum is σ = 1177646070. Its totient is φ = 314038944.

The previous prime is 628077883. The next prime is 628077929. The reversal of 628077896 is 698770826.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 525784900 + 102292996 = 22930^2 + 10114^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39254861 + ... + 39254876.

Almost surely, 2^628077896 is an apocalyptic number.

It is an amenable number.

628077896 is a deficient number, since it is larger than the sum of its proper divisors (549568174).

628077896 is a wasteful number, since it uses less digits than its factorization.

628077896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78509743 (or 78509739 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 628077896 is about 25061.4823184903. The cubic root of 628077896 is about 856.3891765456.

The spelling of 628077896 in words is "six hundred twenty-eight million, seventy-seven thousand, eight hundred ninety-six".