764091 has 12 divisors (see below), whose sum is σ = 1119768. Its totient is φ = 501984.

The previous prime is 764089. The next prime is 764111. The reversal of 764091 is 190467.

It is not a de Polignac number, because 764091 - 2¹ = 764089 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (764011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76 + ... + 1238.

It is an arithmetic number, because the mean of its divisors is an integer number (93314).

2⁷⁶⁴⁰⁹¹ is an apocalyptic number.

764091 is a deficient number, since it is larger than the sum of its proper divisors (355677).

764091 is a wasteful number, since it uses less digits than its factorization.

764091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 764091 is about 874.1229890582. The cubic root of 764091 is about 91.4215039412.

The spelling of 764091 in words is "seven hundred sixty-four thousand, ninety-one".