670654609 has 27 divisors (see below), whose sum is σ = 748987707. Its totient is φ = 600396048.

The previous prime is 670654603. The next prime is 670654613. The reversal of 670654609 is 906456076.

The square root of 670654609 is 25897.

It is a perfect power (a square), and thus also a powerful number.

670654609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 351675009 + 318979600 = 18753^2 + 17860^2 .

It is not a de Polignac number, because 670654609 - 2²¹ = 668557457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670654603) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14269224 + ... + 14269270.

Almost surely, 2^670654609 is an apocalyptic number.

670654609 is the 25897-th square number.

670654609 is the 12949-th centered octagonal number.

It is an amenable number.

670654609 is a deficient number, since it is larger than the sum of its proper divisors (78333098).

670654609 is an equidigital number, since it uses as much as digits as its factorization.

670654609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The cubic root of 670654609 is about 875.3188972047.

The spelling of 670654609 in words is "six hundred seventy million, six hundred fifty-four thousand, six hundred nine".