670816693156 has 9 divisors (see below), whose sum is σ = 1173932079649. Its totient is φ = 335407527544.

The previous prime is 670816693051. The next prime is 670816693259. The reversal of 670816693156 is 651396618076.

The square root of 670816693156 is 819034.

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., 29484900 + 670787208256 = 5430^2 + 819016^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 670816693156.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1433310 + ... + 1842826.

Almost surely, 2^670816693156 is an apocalyptic number.

670816693156 is the 819034-th square number.

It is an amenable number.

670816693156 is a deficient number, since it is larger than the sum of its proper divisors (503115386493).

670816693156 is an frugal number, since it uses more digits than its factorization.

670816693156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819038 (or 409519 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 670816693156 in words is "six hundred seventy billion, eight hundred sixteen million, six hundred ninety-three thousand, one hundred fifty-six".