670448609 has 4 divisors (see below), whose sum is σ = 670543104. Its totient is φ = 670354116.

The previous prime is 670448599. The next prime is 670448627. The reversal of 670448609 is 906844076.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670448609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 670448609.

It is not an unprimeable number, because it can be changed into a prime (670448629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35657 + ... + 51110.

It is an arithmetic number, because the mean of its divisors is an integer number (167635776).

Almost surely, 2^670448609 is an apocalyptic number.

It is an amenable number.

670448609 is a deficient number, since it is larger than the sum of its proper divisors (94495).

670448609 is an equidigital number, since it uses as much as digits as its factorization.

670448609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94494.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 670448609 is about 25893.0223998667. The cubic root of 670448609 is about 875.2292662901.

The spelling of 670448609 in words is "six hundred seventy million, four hundred forty-eight thousand, six hundred nine".