20966066 has 32 divisors (see below), whose sum is σ = 36961920. Its totient is φ = 8812800.

The previous prime is 20966053. The next prime is 20966081. The reversal of 20966066 is 66066902.

20966066 = 556² + 557² + ... + 616².

It is a Curzon 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, 22355 + ... + 23273.

It is an arithmetic number, because the mean of its divisors is an integer number (1155060).

Almost surely, 2^20966066 is an apocalyptic number.

20966066 is a deficient number, since it is larger than the sum of its proper divisors (15995854).

20966066 is a wasteful number, since it uses less digits than its factorization.

20966066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 20966066 is about 4578.8716950795. The cubic root of 20966066 is about 275.7437322317.

The spelling of 20966066 in words is "twenty million, nine hundred sixty-six thousand, sixty-six".