768721984 has 14 divisors (see below), whose sum is σ = 1525432814. Its totient is φ = 384360960.

The previous prime is 768721979. The next prime is 768722011. The reversal of 768721984 is 489127867.

It can be written as a sum of positive squares in only one way, i.e., 746819584 + 21902400 = 27328^2 + 4680^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005577 + ... + 6005704.

Almost surely, 2^768721984 is an apocalyptic number.

It is an amenable number.

768721984 is a deficient number, since it is larger than the sum of its proper divisors (756710830).

768721984 is a wasteful number, since it uses less digits than its factorization.

768721984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12011293 (or 12011283 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 768721984 is about 27725.8360378907. The cubic root of 768721984 is about 916.0582713068.

The spelling of 768721984 in words is "seven hundred sixty-eight million, seven hundred twenty-one thousand, nine hundred eighty-four".