765640083 has 8 divisors (see below), whose sum is σ = 1099380688. Its totient is φ = 471163104.

The previous prime is 765640079. The next prime is 765640103. The reversal of 765640083 is 380046567.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 765640083 - 2² = 765640079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 19631797 = 765640083 / (7 + 6 + 5 + 6 + 4 + 0 + 0 + 8 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765640483) 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, 9815860 + ... + 9815937.

It is an arithmetic number, because the mean of its divisors is an integer number (137422586).

Almost surely, 2^765640083 is an apocalyptic number.

765640083 is a deficient number, since it is larger than the sum of its proper divisors (333740605).

765640083 is a wasteful number, since it uses less digits than its factorization.

765640083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19631813.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 765640083 is about 27670.2020773250. The cubic root of 765640083 is about 914.8324349012.

The spelling of 765640083 in words is "seven hundred sixty-five million, six hundred forty thousand, eighty-three".