864590263673 has 2 divisors, whose sum is σ = 864590263674. Its totient is φ = 864590263672.

The previous prime is 864590263633. The next prime is 864590263703. The reversal of 864590263673 is 376362095468.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636553452649 + 228036811024 = 797843^2 + 477532^2 .

It is a cyclic number.

It is not a de Polignac number, because 864590263673 - 2¹⁸ = 864590001529 is a prime.

It is not a weakly prime, because it can be changed into another prime (864590263633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432295131836 + 432295131837.

It is an arithmetic number, because the mean of its divisors is an integer number (432295131837).

Almost surely, 2^864590263673 is an apocalyptic number.

It is an amenable number.

864590263673 is a deficient number, since it is larger than the sum of its proper divisors (1).

864590263673 is an equidigital number, since it uses as much as digits as its factorization.

864590263673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 59.

The spelling of 864590263673 in words is "eight hundred sixty-four billion, five hundred ninety million, two hundred sixty-three thousand, six hundred seventy-three".