860650920 has 160 divisors (see below), whose sum is σ = 2920480200. Its totient is φ = 227308032.

The previous prime is 860650913. The next prime is 860650937. The reversal of 860650920 is 29056068.

It can be written as a sum of positive squares in 4 ways, for example, as 853457796 + 7193124 = 29214^2 + 2682^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 351942 + ... + 354378.

Almost surely, 2^860650920 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 860650920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460240100).

860650920 is an abundant number, since it is smaller than the sum of its proper divisors (2059829280).

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

860650920 is a wasteful number, since it uses less digits than its factorization.

860650920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 860650920 is about 29336.8525919193. The cubic root of 860650920 is about 951.2084050024.

The spelling of 860650920 in words is "eight hundred sixty million, six hundred fifty thousand, nine hundred twenty".