20660368 has 20 divisors (see below), whose sum is σ = 40100608. Its totient is φ = 10311840.

The previous prime is 20660347. The next prime is 20660377. The reversal of 20660368 is 86306602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15205 + ... + 16507.

Almost surely, 2^20660368 is an apocalyptic number.

It is an amenable number.

20660368 is a deficient number, since it is larger than the sum of its proper divisors (19440240).

20660368 is a wasteful number, since it uses less digits than its factorization.

20660368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302 (or 2296 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20660368 is about 4545.3677518986. The cubic root of 20660368 is about 274.3969949833.

The spelling of 20660368 in words is "twenty million, six hundred sixty thousand, three hundred sixty-eight".