768688940 has 12 divisors (see below), whose sum is σ = 1614246816. Its totient is φ = 307475568.

The previous prime is 768688939. The next prime is 768688961. The reversal of 768688940 is 49886867.

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, 19217204 + ... + 19217243.

It is an arithmetic number, because the mean of its divisors is an integer number (134520568).

Almost surely, 2^768688940 is an apocalyptic number.

It is an amenable number.

768688940 is an abundant number, since it is smaller than the sum of its proper divisors (845557876).

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

768688940 is a wasteful number, since it uses less digits than its factorization.

768688940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38434456 (or 38434454 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 56.

The square root of 768688940 is about 27725.2401252000. The cubic root of 768688940 is about 916.0451453376.

The spelling of 768688940 in words is "seven hundred sixty-eight million, six hundred eighty-eight thousand, nine hundred forty".