765722013 has 32 divisors (see below), whose sum is σ = 1183236096. Its totient is φ = 431440128.

The previous prime is 765722011. The next prime is 765722017. The reversal of 765722013 is 310227567.

It is not a de Polignac number, because 765722013 - 2¹ = 765722011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765722011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 528456 + ... + 529902.

It is an arithmetic number, because the mean of its divisors is an integer number (36976128).

Almost surely, 2^765722013 is an apocalyptic number.

It is an amenable number.

765722013 is a deficient number, since it is larger than the sum of its proper divisors (417514083).

765722013 is a wasteful number, since it uses less digits than its factorization.

765722013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 765722013 is about 27671.6825111882. The cubic root of 765722013 is about 914.8650653541.

The spelling of 765722013 in words is "seven hundred sixty-five million, seven hundred twenty-two thousand, thirteen".