20652719 has 2 divisors, whose sum is σ = 20652720. Its totient is φ = 20652718.

The previous prime is 20652701. The next prime is 20652721. The reversal of 20652719 is 91725602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20652719 is a prime.

It is a super-2 number, since 2×20652719² = 853069604185922, which contains 22 as substring.

Together with 20652721, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20652799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10326359 + 10326360.

It is an arithmetic number, because the mean of its divisors is an integer number (10326360).

Almost surely, 2^20652719 is an apocalyptic number.

20652719 is a deficient number, since it is larger than the sum of its proper divisors (1).

20652719 is an equidigital number, since it uses as much as digits as its factorization.

20652719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 20652719 is about 4544.5262679404. The cubic root of 20652719 is about 274.3631278601.

It can be divided in two parts, 206 and 52719, that added together give a palindrome (52925).

The spelling of 20652719 in words is "twenty million, six hundred fifty-two thousand, seven hundred nineteen".