870646575325640 has 64 divisors (see below), whose sum is σ = 2074191828476400. Its totient is φ = 327772133203968.

The previous prime is 870646575325523. The next prime is 870646575325643. The reversal of 870646575325640 is 46523575646078.

It can be written as a sum of positive squares in 8 ways, for example, as 415965243591076 + 454681331734564 = 20395226^2 + 21323258^2 .

It is a Harshad number since it is a multiple of its sum of digits (68).

It is not an unprimeable number, because it can be changed into a prime (870646575325643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411948716 + ... + 414056804.

Almost surely, 2^{870646575325640} is an apocalyptic number.

It is an amenable number.

870646575325640 is an abundant number, since it is smaller than the sum of its proper divisors (1203545253150760).

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

870646575325640 is a wasteful number, since it uses less digits than its factorization.

870646575325640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715474 (or 2715470 counting only the distinct ones).

The product of its (nonzero) digits is 1016064000, while the sum is 68.

The spelling of 870646575325640 in words is "eight hundred seventy trillion, six hundred forty-six billion, five hundred seventy-five million, three hundred twenty-five thousand, six hundred forty".