670005707 has 8 divisors (see below), whose sum is σ = 765900000. Its totient is φ = 574156224.

The previous prime is 670005691. The next prime is 670005757. The reversal of 670005707 is 707500076.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 670005707 - 2⁴ = 670005691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670005757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31919 + ... + 48567.

It is an arithmetic number, because the mean of its divisors is an integer number (95737500).

Almost surely, 2^670005707 is an apocalyptic number.

670005707 is a deficient number, since it is larger than the sum of its proper divisors (95894293).

670005707 is a wasteful number, since it uses less digits than its factorization.

670005707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22405.

The product of its (nonzero) digits is 10290, while the sum is 32.

The square root of 670005707 is about 25884.4684511774. The cubic root of 670005707 is about 875.0364967634.

The spelling of 670005707 in words is "six hundred seventy million, five thousand, seven hundred seven".