768617628 has 12 divisors (see below), whose sum is σ = 1793441160. Its totient is φ = 256205872.

The previous prime is 768617609. The next prime is 768617639. The reversal of 768617628 is 826716867.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 32025723 + ... + 32025746.

It is an arithmetic number, because the mean of its divisors is an integer number (149453430).

Almost surely, 2^768617628 is an apocalyptic number.

It is an amenable number.

768617628 is an abundant number, since it is smaller than the sum of its proper divisors (1024823532).

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

768617628 is a wasteful number, since it uses less digits than its factorization.

768617628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64051476 (or 64051474 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The square root of 768617628 is about 27723.9540469970. The cubic root of 768617628 is about 916.0168170034.

The spelling of 768617628 in words is "seven hundred sixty-eight million, six hundred seventeen thousand, six hundred twenty-eight".