670545585 has 24 divisors (see below), whose sum is σ = 1165544640. Its totient is φ = 356619552.

The previous prime is 670545583. The next prime is 670545607. The reversal of 670545585 is 585545076.

670545585 is a `hidden beast` number, since 67 + 0 + 5 + 4 + 5 + 585 = 666.

It is not a de Polignac number, because 670545585 - 2¹ = 670545583 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 670545585.

It is not an unprimeable number, because it can be changed into a prime (670545583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4599 + ... + 36908.

It is an arithmetic number, because the mean of its divisors is an integer number (48564360).

Almost surely, 2^670545585 is an apocalyptic number.

It is an amenable number.

670545585 is a deficient number, since it is larger than the sum of its proper divisors (494999055).

670545585 is a wasteful number, since it uses less digits than its factorization.

670545585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41877 (or 41874 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The square root of 670545585 is about 25894.8949602040. The cubic root of 670545585 is about 875.2714629826.

The spelling of 670545585 in words is "six hundred seventy million, five hundred forty-five thousand, five hundred eighty-five".