20698017 has 4 divisors (see below), whose sum is σ = 27597360. Its totient is φ = 13798676.

The previous prime is 20698003. The next prime is 20698019. The reversal of 20698017 is 71089602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20698017 - 2¹⁰ = 20696993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20698019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3449667 + ... + 3449672.

It is an arithmetic number, because the mean of its divisors is an integer number (6899340).

Almost surely, 2^20698017 is an apocalyptic number.

It is an amenable number.

20698017 is a deficient number, since it is larger than the sum of its proper divisors (6899343).

20698017 is an equidigital number, since it uses as much as digits as its factorization.

20698017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6899342.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 20698017 is about 4549.5073359651. The cubic root of 20698017 is about 274.5635700030.

The spelling of 20698017 in words is "twenty million, six hundred ninety-eight thousand, seventeen".