765656940 has 48 divisors (see below), whose sum is σ = 2170990080. Its totient is φ = 201589440.

The previous prime is 765656893. The next prime is 765656981. The reversal of 765656940 is 49656567.

It is a self number, because there is not a number n which added to its sum of digits gives 765656940.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76026 + ... + 85505.

It is an arithmetic number, because the mean of its divisors is an integer number (45228960).

Almost surely, 2^765656940 is an apocalyptic number.

It is an amenable number.

765656940 is an abundant number, since it is smaller than the sum of its proper divisors (1405333140).

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

765656940 is a wasteful number, since it uses less digits than its factorization.

765656940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161622 (or 161620 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 48.

The square root of 765656940 is about 27670.5066813024. The cubic root of 765656940 is about 914.8391487682.

The spelling of 765656940 in words is "seven hundred sixty-five million, six hundred fifty-six thousand, nine hundred forty".