765716730 has 16 divisors (see below), whose sum is σ = 1837720224. Its totient is φ = 204191120.

The previous prime is 765716719. The next prime is 765716773. The reversal of 765716730 is 37617567.

It is a super-2 number, since 2×765716730² = 1172644221203785800, which contains 22 as substring.

It is a Curzon number.

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, 12761916 + ... + 12761975.

It is an arithmetic number, because the mean of its divisors is an integer number (114857514).

Almost surely, 2^765716730 is an apocalyptic number.

765716730 is an abundant number, since it is smaller than the sum of its proper divisors (1072003494).

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

765716730 is a wasteful number, since it uses less digits than its factorization.

765716730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25523901.

The product of its (nonzero) digits is 185220, while the sum is 42.

The square root of 765716730 is about 27671.5870524262. The cubic root of 765716730 is about 914.8629613515.

The spelling of 765716730 in words is "seven hundred sixty-five million, seven hundred sixteen thousand, seven hundred thirty".