864338485560 has 512 divisors, whose sum is σ = 3040975872000. Its totient is φ = 194314291200.

The previous prime is 864338485547. The next prime is 864338485601. The reversal of 864338485560 is 65584833468.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 864338485494 and 864338485503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 389165250 + ... + 389167470.

It is an arithmetic number, because the mean of its divisors is an integer number (5939406000).

Almost surely, 2^864338485560 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 864338485560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520487936000).

864338485560 is an abundant number, since it is smaller than the sum of its proper divisors (2176637386440).

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

864338485560 is a wasteful number, since it uses less digits than its factorization.

864338485560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587 (or 2583 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 60.

The spelling of 864338485560 in words is "eight hundred sixty-four billion, three hundred thirty-eight million, four hundred eighty-five thousand, five hundred sixty".