776564465676 has 24 divisors (see below), whose sum is σ = 1812038294640. Its totient is φ = 258847030272.

The previous prime is 776564465669. The next prime is 776564465687. The reversal of 776564465676 is 676564465677.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 776564465676.

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, 551341 + ... + 1362756.

It is an arithmetic number, because the mean of its divisors is an integer number (75501595610).

Almost surely, 2^776564465676 is an apocalyptic number.

It is an amenable number.

776564465676 is an abundant number, since it is smaller than the sum of its proper divisors (1035473828964).

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

776564465676 is a wasteful number, since it uses less digits than its factorization.

776564465676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947913 (or 1947911 counting only the distinct ones).

The product of its digits is 1066867200, while the sum is 69.

Subtracting from 776564465676 its reverse (676564465677), we obtain a palindrome (99999999999).

The spelling of 776564465676 in words is "seven hundred seventy-six billion, five hundred sixty-four million, four hundred sixty-five thousand, six hundred seventy-six".