864344712087 has 24 divisors (see below), whose sum is σ = 1250447702400. Its totient is φ = 575330575248.

The previous prime is 864344712043. The next prime is 864344712089. The reversal of 864344712087 is 780217443468.

864344712087 is a `hidden beast` number, since 8 + 6 + 434 + 4 + 7 + 120 + 87 = 666.

It is not a de Polignac number, because 864344712087 - 2⁸ = 864344711831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864344712089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16325464 + ... + 16378322.

It is an arithmetic number, because the mean of its divisors is an integer number (52101987600).

Almost surely, 2^864344712087 is an apocalyptic number.

864344712087 is a deficient number, since it is larger than the sum of its proper divisors (386102990313).

864344712087 is a wasteful number, since it uses less digits than its factorization.

864344712087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55667 (or 55664 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 864344712087 in words is "eight hundred sixty-four billion, three hundred forty-four million, seven hundred twelve thousand, eighty-seven".