670538905217 has 16 divisors (see below), whose sum is σ = 676597713792. Its totient is φ = 664508845440.

The previous prime is 670538905147. The next prime is 670538905219. The reversal of 670538905217 is 712509835076.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670538905217 is a prime.

It is a super-3 number, since 3×670538905217³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670538905219) 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, 71810573 + ... + 71819909.

It is an arithmetic number, because the mean of its divisors is an integer number (42287357112).

Almost surely, 2^670538905217 is an apocalyptic number.

It is an amenable number.

670538905217 is a deficient number, since it is larger than the sum of its proper divisors (6058808575).

670538905217 is a wasteful number, since it uses less digits than its factorization.

670538905217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 670538905217 in words is "six hundred seventy billion, five hundred thirty-eight million, nine hundred five thousand, two hundred seventeen".