670137609 has 16 divisors (see below), whose sum is σ = 914220288. Its totient is φ = 436442112.

The previous prime is 670137593. The next prime is 670137613. The reversal of 670137609 is 906731076.

It is not a de Polignac number, because 670137609 - 2⁴ = 670137593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670137679) 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, 77239 + ... + 85475.

It is an arithmetic number, because the mean of its divisors is an integer number (57138768).

Almost surely, 2^670137609 is an apocalyptic number.

It is an amenable number.

670137609 is a deficient number, since it is larger than the sum of its proper divisors (244082679).

670137609 is a wasteful number, since it uses less digits than its factorization.

670137609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8864.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 670137609 is about 25887.0162243546. The cubic root of 670137609 is about 875.0939149264.

The spelling of 670137609 in words is "six hundred seventy million, one hundred thirty-seven thousand, six hundred nine".