766856940 has 24 divisors (see below), whose sum is σ = 2147199600. Its totient is φ = 204495168.

The previous prime is 766856933. The next prime is 766856941. The reversal of 766856940 is 49658667.

It is not an unprimeable number, because it can be changed into a prime (766856941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6390415 + ... + 6390534.

It is an arithmetic number, because the mean of its divisors is an integer number (89466650).

Almost surely, 2^766856940 is an apocalyptic number.

It is an amenable number.

766856940 is an abundant number, since it is smaller than the sum of its proper divisors (1380342660).

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

766856940 is a wasteful number, since it uses less digits than its factorization.

766856940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12780961 (or 12780959 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 766856940 is about 27692.1819292016. The cubic root of 766856940 is about 915.3168361396.

The spelling of 766856940 in words is "seven hundred sixty-six million, eight hundred fifty-six thousand, nine hundred forty".