20983701 has 4 divisors (see below), whose sum is σ = 27978272. Its totient is φ = 13989132.

The previous prime is 20983693. The next prime is 20983709. The reversal of 20983701 is 10738902.

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 an interprime number because it is at equal distance from previous prime (20983693) and next prime (20983709).

It is not a de Polignac number, because 20983701 - 2³ = 20983693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20983709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3497281 + ... + 3497286.

It is an arithmetic number, because the mean of its divisors is an integer number (6994568).

Almost surely, 2^20983701 is an apocalyptic number.

It is an amenable number.

20983701 is a deficient number, since it is larger than the sum of its proper divisors (6994571).

20983701 is an equidigital number, since it uses as much as digits as its factorization.

20983701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6994570.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 20983701 is about 4580.7969830587. The cubic root of 20983701 is about 275.8210218541.

The spelling of 20983701 in words is "twenty million, nine hundred eighty-three thousand, seven hundred one".