670816573506 has 16 divisors (see below), whose sum is σ = 1490703496800. Its totient is φ = 223605524484.

The previous prime is 670816573423. The next prime is 670816573513. The reversal of 670816573506 is 605375618076.

670816573506 is a `hidden beast` number, since 6 + 7 + 0 + 8 + 1 + 65 + 73 + 506 = 666.

It is a super-2 number, since 2×670816573506² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 12422529139 = 670816573506 / (6 + 7 + 0 + 8 + 1 + 6 + 5 + 7 + 3 + 5 + 0 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6211264516 + ... + 6211264623.

It is an arithmetic number, because the mean of its divisors is an integer number (93168968550).

Almost surely, 2^670816573506 is an apocalyptic number.

670816573506 is an abundant number, since it is smaller than the sum of its proper divisors (819886923294).

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

670816573506 is a wasteful number, since it uses less digits than its factorization.

670816573506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12422529150 (or 12422529144 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 670816573506 in words is "six hundred seventy billion, eight hundred sixteen million, five hundred seventy-three thousand, five hundred six".