20982601 has 4 divisors (see below), whose sum is σ = 21894912. Its totient is φ = 20070292.

The previous prime is 20982569. The next prime is 20982613. The reversal of 20982601 is 10628902.

It is a happy number.

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 20982601 - 2⁵ = 20982569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20982601.

It is not an unprimeable number, because it can be changed into a prime (20982001) 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, 456121 + ... + 456166.

It is an arithmetic number, because the mean of its divisors is an integer number (5473728).

Almost surely, 2^20982601 is an apocalyptic number.

It is an amenable number.

20982601 is a deficient number, since it is larger than the sum of its proper divisors (912311).

20982601 is an equidigital number, since it uses as much as digits as its factorization.

20982601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912310.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 20982601 is about 4580.6769150421. The cubic root of 20982601 is about 275.8162021065.

The spelling of 20982601 in words is "twenty million, nine hundred eighty-two thousand, six hundred one".