868140584 has 8 divisors (see below), whose sum is σ = 1627763610. Its totient is φ = 434070288.

The previous prime is 868140577. The next prime is 868140613. The reversal of 868140584 is 485041868.

It can be written as a sum of positive squares in only one way, i.e., 604078084 + 264062500 = 24578^2 + 16250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×868140584² = 1507336147175722112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54258779 + ... + 54258794.

Almost surely, 2^868140584 is an apocalyptic number.

It is an amenable number.

868140584 is a deficient number, since it is larger than the sum of its proper divisors (759623026).

868140584 is a wasteful number, since it uses less digits than its factorization.

868140584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108517579 (or 108517575 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 868140584 is about 29464.2254946571. The cubic root of 868140584 is about 953.9596810910.

The spelling of 868140584 in words is "eight hundred sixty-eight million, one hundred forty thousand, five hundred eighty-four".