20968179 has 8 divisors (see below), whose sum is σ = 28639632. Its totient is φ = 13637760.

The previous prime is 20968177. The next prime is 20968223. The reversal of 20968179 is 97186902.

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

It is not a de Polignac number, because 20968179 - 2¹ = 20968177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20968179.

It is not an unprimeable number, because it can be changed into a prime (20968177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85114 + ... + 85359.

It is an arithmetic number, because the mean of its divisors is an integer number (3579954).

Almost surely, 2^20968179 is an apocalyptic number.

20968179 is a deficient number, since it is larger than the sum of its proper divisors (7671453).

20968179 is a wasteful number, since it uses less digits than its factorization.

20968179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170517.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 20968179 is about 4579.1024229646. The cubic root of 20968179 is about 275.7529952464.

The spelling of 20968179 in words is "twenty million, nine hundred sixty-eight thousand, one hundred seventy-nine".