776121676 has 12 divisors (see below), whose sum is σ = 1481686920. Its totient is φ = 352782560.

The previous prime is 776121667. The next prime is 776121707. The reversal of 776121676 is 676121677.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8819521 + ... + 8819608.

It is an arithmetic number, because the mean of its divisors is an integer number (123473910).

Almost surely, 2^776121676 is an apocalyptic number.

It is an amenable number.

776121676 is a deficient number, since it is larger than the sum of its proper divisors (705565244).

776121676 is a wasteful number, since it uses less digits than its factorization.

776121676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17639144 (or 17639142 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The square root of 776121676 is about 27858.9604256871. The cubic root of 776121676 is about 918.9882055555.

Subtracting from 776121676 its reverse (676121677), we obtain a palindrome (99999999).

The spelling of 776121676 in words is "seven hundred seventy-six million, one hundred twenty-one thousand, six hundred seventy-six".