765013 has 4 divisors (see below), whose sum is σ = 782848. Its totient is φ = 747180.

The previous prime is 765007. The next prime is 765031. The reversal of 765013 is 310567.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 765013 - 2⁹ = 764501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8853 + ... + 8938.

It is an arithmetic number, because the mean of its divisors is an integer number (195712).

2⁷⁶⁵⁰¹³ is an apocalyptic number.

It is an amenable number.

765013 is a deficient number, since it is larger than the sum of its proper divisors (17835).

765013 is a wasteful number, since it uses less digits than its factorization.

765013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17834.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 765013 is about 874.6502158006. The cubic root of 765013 is about 91.4582607961.

It can be divided in two parts, 76501 and 3, that multiplied together give a triangular number (229503 = T₆₇₇).

The spelling of 765013 in words is "seven hundred sixty-five thousand, thirteen".