670443651 has 6 divisors (see below), whose sum is σ = 968418620. Its totient is φ = 446962428.

The previous prime is 670443623. The next prime is 670443677. The reversal of 670443651 is 156344076.

It is a happy number.

670443651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 670443651 - 2⁷ = 670443523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670443601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37246861 + ... + 37246878.

Almost surely, 2^670443651 is an apocalyptic number.

670443651 is a deficient number, since it is larger than the sum of its proper divisors (297974969).

670443651 is a wasteful number, since it uses less digits than its factorization.

670443651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74493745 (or 74493742 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 670443651 is about 25892.9266596111. The cubic root of 670443651 is about 875.2271088304.

The spelling of 670443651 in words is "six hundred seventy million, four hundred forty-three thousand, six hundred fifty-one".