777006664 has 64 divisors (see below), whose sum is σ = 1689609600. Its totient is φ = 328126464.

The previous prime is 777006649. The next prime is 777006673. The reversal of 777006664 is 466600777.

It is a self number, because there is not a number n which added to its sum of digits gives 777006664.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1346344 + ... + 1346920.

It is an arithmetic number, because the mean of its divisors is an integer number (26400150).

Almost surely, 2^777006664 is an apocalyptic number.

It is an amenable number.

777006664 is an abundant number, since it is smaller than the sum of its proper divisors (912602936).

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

777006664 is a wasteful number, since it uses less digits than its factorization.

777006664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 43.

The square root of 777006664 is about 27874.8392641106. The cubic root of 777006664 is about 919.3373709979.

The spelling of 777006664 in words is "seven hundred seventy-seven million, six thousand, six hundred sixty-four".