870464591 has 2 divisors, whose sum is σ = 870464592. Its totient is φ = 870464590.

The previous prime is 870464579. The next prime is 870464611. The reversal of 870464591 is 195464078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 870464591 - 2²⁶ = 803355727 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870464501) 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 as a sum of consecutive naturals, namely, 435232295 + 435232296.

It is an arithmetic number, because the mean of its divisors is an integer number (435232296).

Almost surely, 2^870464591 is an apocalyptic number.

870464591 is a deficient number, since it is larger than the sum of its proper divisors (1).

870464591 is an equidigital number, since it uses as much as digits as its factorization.

870464591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 870464591 is about 29503.6369114047. The cubic root of 870464591 is about 954.8101706883.

The spelling of 870464591 in words is "eight hundred seventy million, four hundred sixty-four thousand, five hundred ninety-one".