868540599 has 12 divisors (see below), whose sum is σ = 1266740176. Its totient is φ = 573404832.

The previous prime is 868540577. The next prime is 868540601. The reversal of 868540599 is 995045868.

It is a happy number.

868540599 is a `hidden beast` number, since 8 + 6 + 8 + 5 + 40 + 599 = 666.

It is not a de Polignac number, because 868540599 - 2⁵ = 868540567 is a prime.

It is a super-2 number, since 2×868540599² = 1508725544222557602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868540199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 467542 + ... + 469395.

Almost surely, 2^868540599 is an apocalyptic number.

868540599 is a deficient number, since it is larger than the sum of its proper divisors (398199577).

868540599 is a wasteful number, since it uses less digits than its factorization.

868540599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937046 (or 937043 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The square root of 868540599 is about 29471.0128600970. The cubic root of 868540599 is about 954.1061779426.

It can be divided in two parts, 8685 and 40599, that added together give a square (49284 = 222²).

The spelling of 868540599 in words is "eight hundred sixty-eight million, five hundred forty thousand, five hundred ninety-nine".