765694816 has 48 divisors (see below), whose sum is σ = 1543147200. Its totient is φ = 373854208.

The previous prime is 765694789. The next prime is 765694819. The reversal of 765694816 is 618496567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765694819) 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, 404400 + ... + 406288.

It is an arithmetic number, because the mean of its divisors is an integer number (32148900).

Almost surely, 2^765694816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 765694816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771573600).

765694816 is an abundant number, since it is smaller than the sum of its proper divisors (777452384).

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

765694816 is a wasteful number, since it uses less digits than its factorization.

765694816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2183 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The square root of 765694816 is about 27671.1910838692. The cubic root of 765694816 is about 914.8542337993.

The spelling of 765694816 in words is "seven hundred sixty-five million, six hundred ninety-four thousand, eight hundred sixteen".