20673717 has 16 divisors (see below), whose sum is σ = 29901312. Its totient is φ = 12654080.

The previous prime is 20673701. The next prime is 20673769. The reversal of 20673717 is 71737602.

It is a cyclic number.

It is not a de Polignac number, because 20673717 - 2⁴ = 20673701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20673797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2853 + ... + 7034.

It is an arithmetic number, because the mean of its divisors is an integer number (1868832).

Almost surely, 2^20673717 is an apocalyptic number.

It is an amenable number.

20673717 is a deficient number, since it is larger than the sum of its proper divisors (9227595).

20673717 is a wasteful number, since it uses less digits than its factorization.

20673717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 20673717 is about 4546.8359328219. The cubic root of 20673717 is about 274.4560797147.

The spelling of 20673717 in words is "twenty million, six hundred seventy-three thousand, seven hundred seventeen".