123608666 has 16 divisors (see below), whose sum is σ = 198063144. Its totient is φ = 57652224.

The previous prime is 123608633. The next prime is 123608689. The reversal of 123608666 is 666806321.

It can be written as a sum of positive squares in 4 ways, for example, as 81631225 + 41977441 = 9035^2 + 6479^2 .

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, 12245 + ... + 19928.

Almost surely, 2^123608666 is an apocalyptic number.

123608666 is a deficient number, since it is larger than the sum of its proper divisors (74454478).

123608666 is a wasteful number, since it uses less digits than its factorization.

123608666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32305.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 123608666 is about 11117.9434249325. The cubic root of 123608666 is about 498.1379622388.

The spelling of 123608666 in words is "one hundred twenty-three million, six hundred eight thousand, six hundred sixty-six".