870653215744 has 99 divisors (see below), whose sum is σ = 1885476591093. Its totient is φ = 401660792832.

The previous prime is 870653215711. The next prime is 870653215811. The reversal of 870653215744 is 447512356078.

The square root of 870653215744 is 933088.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 128794854400 + 741858361344 = 358880^2 + 861312^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870653215691 and 870653215700.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 388163487 + ... + 388165729.

Almost surely, 2^870653215744 is an apocalyptic number.

870653215744 is the 933088-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 870653215744

870653215744 is an abundant number, since it is smaller than the sum of its proper divisors (1014823375349).

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

870653215744 is an frugal number, since it uses more digits than its factorization.

870653215744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4532 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 870653215744 in words is "eight hundred seventy billion, six hundred fifty-three million, two hundred fifteen thousand, seven hundred forty-four".