20700589 has 12 divisors (see below), whose sum is σ = 25933404. Its totient is φ = 16377984.

The previous prime is 20700553. The next prime is 20700593. The reversal of 20700589 is 98500702.

It can be written as a sum of positive squares in 2 ways, for example, as 9922500 + 10778089 = 3150^2 + 3283^2 .

It is not a de Polignac number, because 20700589 - 2⁹ = 20700077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20700589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20703589) 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 11 ways as a sum of consecutive naturals, for example, 15612 + ... + 16885.

It is an arithmetic number, because the mean of its divisors is an integer number (2161117).

Almost surely, 2^20700589 is an apocalyptic number.

It is an amenable number.

20700589 is a deficient number, since it is larger than the sum of its proper divisors (5232815).

20700589 is a wasteful number, since it uses less digits than its factorization.

20700589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32524 (or 32517 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 20700589 is about 4549.7899951536. The cubic root of 20700589 is about 274.5749422398.

The spelling of 20700589 in words is "twenty million, seven hundred thousand, five hundred eighty-nine".