20660710 has 16 divisors (see below), whose sum is σ = 42502176. Its totient is φ = 7083648.

The previous prime is 20660701. The next prime is 20660743. The reversal of 20660710 is 1706602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147507 + ... + 147646.

It is an arithmetic number, because the mean of its divisors is an integer number (2656386).

Almost surely, 2^20660710 is an apocalyptic number.

20660710 is an abundant number, since it is smaller than the sum of its proper divisors (21841466).

20660710 is a wasteful number, since it uses less digits than its factorization.

20660710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295167.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 20660710 is about 4545.4053724613. The cubic root of 20660710 is about 274.3985090457.

The spelling of 20660710 in words is "twenty million, six hundred sixty thousand, seven hundred ten".