670165585 has 16 divisors (see below), whose sum is σ = 852190416. Its totient is φ = 504188928.

The previous prime is 670165583. The next prime is 670165589. The reversal of 670165585 is 585561076.

It can be written as a sum of positive squares in 8 ways, for example, as 26173456 + 643992129 = 5116^2 + 25377^2 .

It is a cyclic number.

It is not a de Polignac number, because 670165585 - 2¹ = 670165583 is a prime.

It is a super-2 number, since 2×670165585² = 898243822636784450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (670165583) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 141577 + ... + 146233.

It is an arithmetic number, because the mean of its divisors is an integer number (53261901).

Almost surely, 2^670165585 is an apocalyptic number.

It is an amenable number.

670165585 is a deficient number, since it is larger than the sum of its proper divisors (182024831).

670165585 is a wasteful number, since it uses less digits than its factorization.

670165585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6372.

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 670165585 is about 25887.5565668141. The cubic root of 670165585 is about 875.1060921700.

The spelling of 670165585 in words is "six hundred seventy million, one hundred sixty-five thousand, five hundred eighty-five".