20660662 has 8 divisors (see below), whose sum is σ = 33808392. Its totient is φ = 9391200.

The previous prime is 20660659. The next prime is 20660669. The reversal of 20660662 is 26606602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20660662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660669) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 469539 + ... + 469582.

It is an arithmetic number, because the mean of its divisors is an integer number (4226049).

Almost surely, 2^20660662 is an apocalyptic number.

20660662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20660662 is a deficient number, since it is larger than the sum of its proper divisors (13147730).

20660662 is a wasteful number, since it uses less digits than its factorization.

20660662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939134.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20660662 is about 4545.4000924011. The cubic root of 20660662 is about 274.3982965467.

The spelling of 20660662 in words is "twenty million, six hundred sixty thousand, six hundred sixty-two".