670008705 has 16 divisors (see below), whose sum is σ = 1074444480. Its totient is φ = 356527808.

The previous prime is 670008683. The next prime is 670008727. The reversal of 670008705 is 507800076.

It is an interprime number because it is at equal distance from previous prime (670008683) and next prime (670008727).

It is a cyclic number.

It is not a de Polignac number, because 670008705 - 2²¹ = 667911553 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43770 + ... + 57059.

It is an arithmetic number, because the mean of its divisors is an integer number (67152780).

Almost surely, 2^670008705 is an apocalyptic number.

It is an amenable number.

670008705 is a deficient number, since it is larger than the sum of its proper divisors (404435775).

670008705 is a wasteful number, since it uses less digits than its factorization.

670008705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101280.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 670008705 is about 25884.5263622883. The cubic root of 670008705 is about 875.0378019043.

The spelling of 670008705 in words is "six hundred seventy million, eight thousand, seven hundred five".