670665067 has 8 divisors (see below), whose sum is σ = 692602880. Its totient is φ = 648746280.

The previous prime is 670665019. The next prime is 670665133. The reversal of 670665067 is 760566076.

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 670665067 - 2¹⁵ = 670632299 is a prime.

It is a super-2 number, since 2×670665067² = 899583264188228978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670665007) 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, 115684 + ... + 121342.

It is an arithmetic number, because the mean of its divisors is an integer number (86575360).

Almost surely, 2^670665067 is an apocalyptic number.

670665067 is a deficient number, since it is larger than the sum of its proper divisors (21937813).

670665067 is a wasteful number, since it uses less digits than its factorization.

670665067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9513.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 670665067 is about 25897.2019144926. The cubic root of 670665067 is about 875.3234470069.

The spelling of 670665067 in words is "six hundred seventy million, six hundred sixty-five thousand, sixty-seven".