768639976 has 32 divisors (see below), whose sum is σ = 1563256800. Its totient is φ = 352198080.

The previous prime is 768639959. The next prime is 768640031. The reversal of 768639976 is 679936867.

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, 12130 + ... + 41041.

It is an arithmetic number, because the mean of its divisors is an integer number (48851775).

Almost surely, 2^768639976 is an apocalyptic number.

It is an amenable number.

768639976 is an abundant number, since it is smaller than the sum of its proper divisors (794616824).

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

768639976 is a wasteful number, since it uses less digits than its factorization.

768639976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53329 (or 53325 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 61.

The square root of 768639976 is about 27724.3570890291. The cubic root of 768639976 is about 916.0256948228.

The spelling of 768639976 in words is "seven hundred sixty-eight million, six hundred thirty-nine thousand, nine hundred seventy-six".