670666615 has 8 divisors (see below), whose sum is σ = 832551840. Its totient is φ = 518032032.

The previous prime is 670666567. The next prime is 670666621. The reversal of 670666615 is 516666076.

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 670666615 - 2⁹ = 670666103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2312499 + ... + 2312788.

It is an arithmetic number, because the mean of its divisors is an integer number (104068980).

Almost surely, 2^670666615 is an apocalyptic number.

670666615 is a deficient number, since it is larger than the sum of its proper divisors (161885225).

670666615 is a wasteful number, since it uses less digits than its factorization.

670666615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625321.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 670666615 is about 25897.2318018741. The cubic root of 670666615 is about 875.3241204676.

The spelling of 670666615 in words is "six hundred seventy million, six hundred sixty-six thousand, six hundred fifteen".