20664202 has 16 divisors (see below), whose sum is σ = 33640992. Its totient is φ = 9462960.

The previous prime is 20664139. The next prime is 20664239. The reversal of 20664202 is 20246602.

It is a happy number.

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, 373 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (2102562).

Almost surely, 2^20664202 is an apocalyptic number.

20664202 is a deficient number, since it is larger than the sum of its proper divisors (12976790).

20664202 is a wasteful number, since it uses less digits than its factorization.

20664202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6213.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20664202 is about 4545.7894803873. The cubic root of 20664202 is about 274.4139674627.

The spelling of 20664202 in words is "twenty million, six hundred sixty-four thousand, two hundred two".