766117880 has 64 divisors (see below), whose sum is σ = 1941166080. Its totient is φ = 269596800.

The previous prime is 766117861. The next prime is 766117883. The reversal of 766117880 is 88711667.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766117883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14444 + ... + 41723.

It is an arithmetic number, because the mean of its divisors is an integer number (30330720).

Almost surely, 2^766117880 is an apocalyptic number.

It is an amenable number.

766117880 is an abundant number, since it is smaller than the sum of its proper divisors (1175048200).

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

766117880 is a wasteful number, since it uses less digits than its factorization.

766117880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56220 (or 56216 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 766117880 is about 27678.8345130354. The cubic root of 766117880 is about 915.0226954467.

The spelling of 766117880 in words is "seven hundred sixty-six million, one hundred seventeen thousand, eight hundred eighty".