20668773 has 8 divisors (see below), whose sum is σ = 27615168. Its totient is φ = 13750784.

The previous prime is 20668771. The next prime is 20668777. The reversal of 20668773 is 37786602.

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

It is a cyclic number.

It is not a de Polignac number, because 20668773 - 2¹ = 20668771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20668771) 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 7 ways as a sum of consecutive naturals, for example, 5340 + ... + 8357.

It is an arithmetic number, because the mean of its divisors is an integer number (3451896).

Almost surely, 2^20668773 is an apocalyptic number.

It is an amenable number.

20668773 is a deficient number, since it is larger than the sum of its proper divisors (6946395).

20668773 is a wasteful number, since it uses less digits than its factorization.

20668773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14203.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 20668773 is about 4546.2922255394. The cubic root of 20668773 is about 274.4341997751.

The spelling of 20668773 in words is "twenty million, six hundred sixty-eight thousand, seven hundred seventy-three".