870664466078 has 64 divisors (see below), whose sum is σ = 1525937356800. Its totient is φ = 368631727200.

The previous prime is 870664466071. The next prime is 870664466083.

870664466078 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×870664466078² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 870664466078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870664466071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4640633 + ... + 4824603.

It is an arithmetic number, because the mean of its divisors is an integer number (23842771200).

Almost surely, 2^870664466078 is an apocalyptic number.

870664466078 is a deficient number, since it is larger than the sum of its proper divisors (655272890722).

870664466078 is a wasteful number, since it uses less digits than its factorization.

870664466078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184253.

The product of its (nonzero) digits is 65028096, while the sum is 62.

The spelling of 870664466078 in words is "eight hundred seventy billion, six hundred sixty-four million, four hundred sixty-six thousand, seventy-eight".