670154514667408 has 40 divisors (see below), whose sum is σ = 1298903172485688. Its totient is φ = 334953710886912.

The previous prime is 670154514667361. The next prime is 670154514667409. The reversal of 670154514667408 is 804766415451076.

It can be written as a sum of positive squares in 4 ways, for example, as 24244082173584 + 645910432493824 = 4923828^2 + 25414768^2 .

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 670154514667408.

It is not an unprimeable number, because it can be changed into a prime (670154514667409) 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, 731125360 + ... + 732041392.

Almost surely, 2^{670154514667408} is an apocalyptic number.

It is an amenable number.

670154514667408 is a deficient number, since it is larger than the sum of its proper divisors (628748657818280).

670154514667408 is a wasteful number, since it uses less digits than its factorization.

670154514667408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932851 (or 932845 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 64.

The spelling of 670154514667408 in words is "six hundred seventy trillion, one hundred fifty-four billion, five hundred fourteen million, six hundred sixty-seven thousand, four hundred eight".