670912907 has 4 divisors (see below), whose sum is σ = 766757616. Its totient is φ = 575068200.

The previous prime is 670912901. The next prime is 670912937. The reversal of 670912907 is 709219076.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 670912907 - 2¹⁸ = 670650763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670912901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47922344 + ... + 47922357.

It is an arithmetic number, because the mean of its divisors is an integer number (191689404).

Almost surely, 2^670912907 is an apocalyptic number.

670912907 is a deficient number, since it is larger than the sum of its proper divisors (95844709).

670912907 is an equidigital number, since it uses as much as digits as its factorization.

670912907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95844708.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 670912907 is about 25901.9865454370. The cubic root of 670912907 is about 875.4312571277.

The spelling of 670912907 in words is "six hundred seventy million, nine hundred twelve thousand, nine hundred seven".