670386659 has 4 divisors (see below), whose sum is σ = 670623840. Its totient is φ = 670149480.

The previous prime is 670386643. The next prime is 670386713. The reversal of 670386659 is 956683076.

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

It is a cyclic number.

It is not a de Polignac number, because 670386659 - 2⁴ = 670386643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670389659) 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, 114299 + ... + 120020.

It is an arithmetic number, because the mean of its divisors is an integer number (167655960).

Almost surely, 2^670386659 is an apocalyptic number.

670386659 is a deficient number, since it is larger than the sum of its proper divisors (237181).

670386659 is a wasteful number, since it uses less digits than its factorization.

670386659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237180.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 670386659 is about 25891.8261040043. The cubic root of 670386659 is about 875.2023081596.

The spelling of 670386659 in words is "six hundred seventy million, three hundred eighty-six thousand, six hundred fifty-nine".