765140 has 24 divisors (see below), whose sum is σ = 1633632. Its totient is φ = 300960.

The previous prime is 765139. The next prime is 765143. The reversal of 765140 is 41567.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 765140.

It is not an unprimeable number, because it can be changed into a prime (765143) 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 7 ways as a sum of consecutive naturals, for example, 1055 + ... + 1625.

It is an arithmetic number, because the mean of its divisors is an integer number (68068).

2⁷⁶⁵¹⁴⁰ is an apocalyptic number.

It is an amenable number.

765140 is an abundant number, since it is smaller than the sum of its proper divisors (868492).

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

765140 is a wasteful number, since it uses less digits than its factorization.

765140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 765140 is about 874.7228132386. The cubic root of 765140 is about 91.4633215190.

The spelling of 765140 in words is "seven hundred sixty-five thousand, one hundred forty".