20698093 has 16 divisors (see below), whose sum is σ = 23220736. Its totient is φ = 18325440.

The previous prime is 20698081. The next prime is 20698099. The reversal of 20698093 is 39089602.

It is a cyclic number.

It is not a de Polignac number, because 20698093 - 2⁹ = 20697581 is a prime.

It is a super-2 number, since 2×20698093² = 856822107673298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20698099) 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, 33796 + ... + 34402.

It is an arithmetic number, because the mean of its divisors is an integer number (1451296).

Almost surely, 2^20698093 is an apocalyptic number.

It is an amenable number.

20698093 is a deficient number, since it is larger than the sum of its proper divisors (2522643).

20698093 is a wasteful number, since it uses less digits than its factorization.

20698093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 20698093 is about 4549.5156885102. The cubic root of 20698093 is about 274.5639060546.

The spelling of 20698093 in words is "twenty million, six hundred ninety-eight thousand, ninety-three".