777228864 has 56 divisors (see below), whose sum is σ = 2058789888. Its totient is φ = 258777600.

The previous prime is 777228853. The next prime is 777228871. The reversal of 777228864 is 468822777.

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, 219234 + ... + 222750.

Almost surely, 2^777228864 is an apocalyptic number.

It is an amenable number.

777228864 is an abundant number, since it is smaller than the sum of its proper divisors (1281561024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

777228864 is a wasteful number, since it uses less digits than its factorization.

777228864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683 (or 4673 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 51.

The square root of 777228864 is about 27878.8246524132. The cubic root of 777228864 is about 919.4249967134.

The spelling of 777228864 in words is "seven hundred seventy-seven million, two hundred twenty-eight thousand, eight hundred sixty-four".