868563966 has 32 divisors (see below), whose sum is σ = 1882096128. Its totient is φ = 266152320.

The previous prime is 868563911. The next prime is 868563979. The reversal of 868563966 is 669365868.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94630 + ... + 103401.

It is an arithmetic number, because the mean of its divisors is an integer number (58815504).

Almost surely, 2^868563966 is an apocalyptic number.

868563966 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

868563966 is an abundant number, since it is smaller than the sum of its proper divisors (1013532162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868563966 is a wasteful number, since it uses less digits than its factorization.

868563966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198096.

The product of its digits is 11197440, while the sum is 57.

The square root of 868563966 is about 29471.4092978263. The cubic root of 868563966 is about 954.1147342109.

The spelling of 868563966 in words is "eight hundred sixty-eight million, five hundred sixty-three thousand, nine hundred sixty-six".