805860864 has 120 divisors (see below), whose sum is σ = 2341155960. Its totient is φ = 266846208.

The previous prime is 805860833. The next prime is 805860899. The reversal of 805860864 is 468068508.

805860864 is a `hidden beast` number, since 8 + 0 + 586 + 0 + 8 + 64 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 824344 + ... + 825320.

It is an arithmetic number, because the mean of its divisors is an integer number (19509633).

Almost surely, 2^805860864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805860864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1170577980).

805860864 is an abundant number, since it is smaller than the sum of its proper divisors (1535295096).

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

805860864 is a wasteful number, since it uses less digits than its factorization.

805860864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 805860864 is about 28387.6885991093. The cubic root of 805860864 is about 930.5792298688.

The spelling of 805860864 in words is "eight hundred five million, eight hundred sixty thousand, eight hundred sixty-four".