765195816 has 384 divisors, whose sum is σ = 2668584960. Its totient is φ = 177292800.

The previous prime is 765195791. The next prime is 765195829. The reversal of 765195816 is 618591567.

It is a congruent 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 95 ways as a sum of consecutive naturals, for example, 20680950 + ... + 20680986.

It is an arithmetic number, because the mean of its divisors is an integer number (6949440).

Almost surely, 2^765195816 is an apocalyptic number.

765195816 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 765195816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334292480).

765195816 is an abundant number, since it is smaller than the sum of its proper divisors (1903389144).

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

765195816 is a wasteful number, since it uses less digits than its factorization.

765195816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 110 counting only the distinct ones).

The product of its digits is 453600, while the sum is 48.

The square root of 765195816 is about 27662.1730165943. The cubic root of 765195816 is about 914.6554550962.

The spelling of 765195816 in words is "seven hundred sixty-five million, one hundred ninety-five thousand, eight hundred sixteen".