2166606670 has 32 divisors (see below), whose sum is σ = 4283642880. Its totient is φ = 785331360.

The previous prime is 2166606641. The next prime is 2166606683. The reversal of 2166606670 is 766066612.

It is a congruent 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, 243526 + ... + 252265.

It is an arithmetic number, because the mean of its divisors is an integer number (133863840).

Almost surely, 2^2166606670 is an apocalyptic number.

2166606670 is a deficient number, since it is larger than the sum of its proper divisors (2117036210).

2166606670 is a wasteful number, since it uses less digits than its factorization.

2166606670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495840.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 2166606670 is about 46546.8223405207. The cubic root of 2166606670 is about 1293.9774021457.

The spelling of 2166606670 in words is "two billion, one hundred sixty-six million, six hundred six thousand, six hundred seventy".