766501988 has 24 divisors (see below), whose sum is σ = 1533729792. Its totient is φ = 328345344.

The previous prime is 766501963. The next prime is 766501993. The reversal of 766501988 is 889105667.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69245 + ... + 79547.

It is an arithmetic number, because the mean of its divisors is an integer number (63905408).

Almost surely, 2^766501988 is an apocalyptic number.

It is an amenable number.

766501988 is an abundant number, since it is smaller than the sum of its proper divisors (767227804).

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

766501988 is a wasteful number, since it uses less digits than its factorization.

766501988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12971 (or 12969 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 766501988 is about 27685.7723027551. The cubic root of 766501988 is about 915.1755913324.

The spelling of 766501988 in words is "seven hundred sixty-six million, five hundred one thousand, nine hundred eighty-eight".