20968706 has 16 divisors (see below), whose sum is σ = 34564320. Its totient is φ = 9461280.

The previous prime is 20968699. The next prime is 20968771. The reversal of 20968706 is 60786902.

It is a self number, because there is not a number n which added to its sum of digits gives 20968706.

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, 371 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (2160270).

Almost surely, 2^20968706 is an apocalyptic number.

20968706 is a deficient number, since it is larger than the sum of its proper divisors (13595614).

20968706 is a wasteful number, since it uses less digits than its factorization.

20968706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7009.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 20968706 is about 4579.1599666314. The cubic root of 20968706 is about 275.7553054234.

The spelling of 20968706 in words is "twenty million, nine hundred sixty-eight thousand, seven hundred six".