860064720 has 40 divisors (see below), whose sum is σ = 2666201376. Its totient is φ = 229350528.

The previous prime is 860064719. The next prime is 860064727. The reversal of 860064720 is 27460068.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×860064720² = 1479422645177356800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860064727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1791562 + ... + 1792041.

Almost surely, 2^860064720 is an apocalyptic number.

860064720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

860064720 is an abundant number, since it is smaller than the sum of its proper divisors (1806136656).

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

860064720 is a wasteful number, since it uses less digits than its factorization.

860064720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583619 (or 3583613 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 860064720 is about 29326.8600433118. The cubic root of 860064720 is about 950.9923960113.

The spelling of 860064720 in words is "eight hundred sixty million, sixty-four thousand, seven hundred twenty".