670065605 has 16 divisors (see below), whose sum is σ = 895843584. Its totient is φ = 476950080.

The previous prime is 670065581. The next prime is 670065607. The reversal of 670065605 is 506560076.

It is not a de Polignac number, because 670065605 - 2¹⁰ = 670064581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670065607) 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, 127022 + ... + 132191.

It is an arithmetic number, because the mean of its divisors is an integer number (55990224).

Almost surely, 2^670065605 is an apocalyptic number.

It is an amenable number.

670065605 is a deficient number, since it is larger than the sum of its proper divisors (225777979).

670065605 is a wasteful number, since it uses less digits than its factorization.

670065605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259276.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 670065605 is about 25885.6254512036. The cubic root of 670065605 is about 875.0625718519.

The spelling of 670065605 in words is "six hundred seventy million, sixty-five thousand, six hundred five".