670705616 has 20 divisors (see below), whose sum is σ = 1485134112. Its totient is φ = 287445216.

The previous prime is 670705601. The next prime is 670705621. The reversal of 670705616 is 616507076.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 670705616.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2994110 + ... + 2994333.

Almost surely, 2^670705616 is an apocalyptic number.

It is an amenable number.

670705616 is an abundant number, since it is smaller than the sum of its proper divisors (814428496).

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

670705616 is a wasteful number, since it uses less digits than its factorization.

670705616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5988458 (or 5988452 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 670705616 is about 25897.9847864655. The cubic root of 670705616 is about 875.3410875933.

The spelling of 670705616 in words is "six hundred seventy million, seven hundred five thousand, six hundred sixteen".