859620864 has 40 divisors (see below), whose sum is σ = 2290087800. Its totient is φ = 286539776.

The previous prime is 859620863. The next prime is 859620901. The reversal of 859620864 is 468026958.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859620863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278289 + ... + 281360.

It is an arithmetic number, because the mean of its divisors is an integer number (57252195).

Almost surely, 2^859620864 is an apocalyptic number.

It is an amenable number.

859620864 is an abundant number, since it is smaller than the sum of its proper divisors (1430466936).

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

859620864 is an equidigital number, since it uses as much as digits as its factorization.

859620864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559670 (or 559654 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The square root of 859620864 is about 29319.2916694793. The cubic root of 859620864 is about 950.8287740946.

The spelling of 859620864 in words is "eight hundred fifty-nine million, six hundred twenty thousand, eight hundred sixty-four".