20654701 has 2 divisors, whose sum is σ = 20654702. Its totient is φ = 20654700.

The previous prime is 20654687. The next prime is 20654747. The reversal of 20654701 is 10745602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15792676 + 4862025 = 3974^2 + 2205^2 .

It is a cyclic number.

It is not a de Polignac number, because 20654701 - 2¹⁹ = 20130413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20654791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10327350 + 10327351.

It is an arithmetic number, because the mean of its divisors is an integer number (10327351).

Almost surely, 2^20654701 is an apocalyptic number.

It is an amenable number.

20654701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20654701 is an equidigital number, since it uses as much as digits as its factorization.

20654701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20654701 is about 4544.7443272422. The cubic root of 20654701 is about 274.3719042723.

Subtracting from 20654701 its reverse (10745602), we obtain a palindrome (9909099).

The spelling of 20654701 in words is "twenty million, six hundred fifty-four thousand, seven hundred one".