864358687 has 2 divisors, whose sum is σ = 864358688. Its totient is φ = 864358686.

The previous prime is 864358681. The next prime is 864358723. The reversal of 864358687 is 786853468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 864358687 - 2⁷ = 864358559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864358681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432179343 + 432179344.

It is an arithmetic number, because the mean of its divisors is an integer number (432179344).

Almost surely, 2^864358687 is an apocalyptic number.

864358687 is a deficient number, since it is larger than the sum of its proper divisors (1).

864358687 is an equidigital number, since it uses as much as digits as its factorization.

864358687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 55.

The square root of 864358687 is about 29399.9776700595. The cubic root of 864358687 is about 952.5724139002.

The spelling of 864358687 in words is "eight hundred sixty-four million, three hundred fifty-eight thousand, six hundred eighty-seven".