765040090 has 16 divisors (see below), whose sum is σ = 1409097888. Its totient is φ = 298899216.

The previous prime is 765040063. The next prime is 765040091. The reversal of 765040090 is 90040567.

It is not an unprimeable number, because it can be changed into a prime (765040091) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 889152 + ... + 890011.

It is an arithmetic number, because the mean of its divisors is an integer number (88068618).

Almost surely, 2^765040090 is an apocalyptic number.

765040090 is a deficient number, since it is larger than the sum of its proper divisors (644057798).

765040090 is a wasteful number, since it uses less digits than its factorization.

765040090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779213.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 765040090 is about 27659.3580908885. The cubic root of 765040090 is about 914.5934033111.

The spelling of 765040090 in words is "seven hundred sixty-five million, forty thousand, ninety".