766863408 has 40 divisors (see below), whose sum is σ = 2085332800. Its totient is φ = 242167104.

The previous prime is 766863397. The next prime is 766863451. The reversal of 766863408 is 804368667.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 419518 + ... + 421341.

It is an arithmetic number, because the mean of its divisors is an integer number (52133320).

Almost surely, 2^766863408 is an apocalyptic number.

It is an amenable number.

766863408 is an abundant number, since it is smaller than the sum of its proper divisors (1318469392).

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

766863408 is a wasteful number, since it uses less digits than its factorization.

766863408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840889 (or 840883 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The square root of 766863408 is about 27692.2987128191. The cubic root of 766863408 is about 915.3194095238.

The spelling of 766863408 in words is "seven hundred sixty-six million, eight hundred sixty-three thousand, four hundred eight".