670172644 has 12 divisors (see below), whose sum is σ = 1173472384. Its totient is φ = 334894824.

The previous prime is 670172611. The next prime is 670172717. The reversal of 670172644 is 446271076.

670172644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39852 + ... + 54115.

Almost surely, 2^670172644 is an apocalyptic number.

It is an amenable number.

670172644 is a deficient number, since it is larger than the sum of its proper divisors (503299740).

670172644 is a wasteful number, since it uses less digits than its factorization.

670172644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95754 (or 95752 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 670172644 is about 25887.6929060896. The cubic root of 670172644 is about 875.1091647202.

The spelling of 670172644 in words is "six hundred seventy million, one hundred seventy-two thousand, six hundred forty-four".