765091 has 2 divisors, whose sum is σ = 765092. Its totient is φ = 765090.

The previous prime is 765059. The next prime is 765097. The reversal of 765091 is 190567.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 765091 - 2⁵ = 765059 is a prime.

It is not a weakly prime, because it can be changed into another prime (765097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382545 + 382546.

It is an arithmetic number, because the mean of its divisors is an integer number (382546).

2⁷⁶⁵⁰⁹¹ is an apocalyptic number.

765091 is a deficient number, since it is larger than the sum of its proper divisors (1).

765091 is an equidigital number, since it uses as much as digits as its factorization.

765091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 765091 is about 874.6948039173. The cubic root of 765091 is about 91.4613690229.

The spelling of 765091 in words is "seven hundred sixty-five thousand, ninety-one".