20662883 has 4 divisors (see below), whose sum is σ = 20867568. Its totient is φ = 20458200.

The previous prime is 20662847. The next prime is 20662891. The reversal of 20662883 is 38826602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20662883 - 2²⁰ = 19614307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20662183) 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, 102191 + ... + 102392.

It is an arithmetic number, because the mean of its divisors is an integer number (5216892).

Almost surely, 2^20662883 is an apocalyptic number.

20662883 is a deficient number, since it is larger than the sum of its proper divisors (204685).

20662883 is a wasteful number, since it uses less digits than its factorization.

20662883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204684.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 20662883 is about 4545.6443987624. The cubic root of 20662883 is about 274.4081287063.

The spelling of 20662883 in words is "twenty million, six hundred sixty-two thousand, eight hundred eighty-three".