20698359 has 16 divisors (see below), whose sum is σ = 31079424. Its totient is φ = 12139200.

The previous prime is 20698343. The next prime is 20698369. The reversal of 20698359 is 95389602.

It is not a de Polignac number, because 20698359 - 2⁴ = 20698343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20698359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20698319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9094 + ... + 11139.

It is an arithmetic number, because the mean of its divisors is an integer number (1942464).

Almost surely, 2^20698359 is an apocalyptic number.

20698359 is a deficient number, since it is larger than the sum of its proper divisors (10381065).

20698359 is a wasteful number, since it uses less digits than its factorization.

20698359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20278.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 20698359 is about 4549.5449222972. The cubic root of 20698359 is about 274.5650822288.

The spelling of 20698359 in words is "twenty million, six hundred ninety-eight thousand, three hundred fifty-nine".