660675705 has 32 divisors (see below), whose sum is σ = 1071016320. Its totient is φ = 347742720.

The previous prime is 660675671. The next prime is 660675727. The reversal of 660675705 is 507576066.

660675705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660675705 - 2⁷ = 660675577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511110 + ... + 512400.

It is an arithmetic number, because the mean of its divisors is an integer number (33469260).

Almost surely, 2^660675705 is an apocalyptic number.

It is an amenable number.

660675705 is a deficient number, since it is larger than the sum of its proper divisors (410340615).

660675705 is a wasteful number, since it uses less digits than its factorization.

660675705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721.

The product of its (nonzero) digits is 264600, while the sum is 42.

The square root of 660675705 is about 25703.6126838233. The cubic root of 660675705 is about 870.9557932732.

The spelling of 660675705 in words is "six hundred sixty million, six hundred seventy-five thousand, seven hundred five".