864590263679 has 4 divisors (see below), whose sum is σ = 880903287576. Its totient is φ = 848277239784.

The previous prime is 864590263673. The next prime is 864590263703. The reversal of 864590263679 is 976362095468.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864590263679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864590263673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8156511869 + ... + 8156511974.

It is an arithmetic number, because the mean of its divisors is an integer number (220225821894).

Almost surely, 2^864590263679 is an apocalyptic number.

864590263679 is a deficient number, since it is larger than the sum of its proper divisors (16313023897).

864590263679 is a wasteful number, since it uses less digits than its factorization.

864590263679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16313023896.

The product of its (nonzero) digits is 117573120, while the sum is 65.

The spelling of 864590263679 in words is "eight hundred sixty-four billion, five hundred ninety million, two hundred sixty-three thousand, six hundred seventy-nine".