765632091 has 8 divisors (see below), whose sum is σ = 1166677504. Its totient is φ = 437504040.

The previous prime is 765632081. The next prime is 765632093. The reversal of 765632091 is 190236567.

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

It is not a de Polignac number, because 765632091 - 2⁵ = 765632059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765632093) 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, 18229315 + ... + 18229356.

It is an arithmetic number, because the mean of its divisors is an integer number (145834688).

Almost surely, 2^765632091 is an apocalyptic number.

765632091 is a deficient number, since it is larger than the sum of its proper divisors (401045413).

765632091 is a wasteful number, since it uses less digits than its factorization.

765632091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36458681.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 765632091 is about 27670.0576616674. The cubic root of 765632091 is about 914.8292517840.

The spelling of 765632091 in words is "seven hundred sixty-five million, six hundred thirty-two thousand, ninety-one".