23655641 has 2 divisors, whose sum is σ = 23655642. Its totient is φ = 23655640.

The previous prime is 23655631. The next prime is 23655659. The reversal of 23655641 is 14655632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23319241 + 336400 = 4829^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 23655641 - 2¹⁴ = 23639257 is a prime.

It is a super-2 number, since 2×23655641² = 1119178702241762, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23655598 and 23655607.

It is not a weakly prime, because it can be changed into another prime (23655631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11827820 + 11827821.

It is an arithmetic number, because the mean of its divisors is an integer number (11827821).

Almost surely, 2^23655641 is an apocalyptic number.

It is an amenable number.

23655641 is a deficient number, since it is larger than the sum of its proper divisors (1).

23655641 is an equidigital number, since it uses as much as digits as its factorization.

23655641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 23655641 is about 4863.7065084152. The cubic root of 23655641 is about 287.0636748810.

Subtracting from 23655641 its reverse (14655632), we obtain a palindrome (9000009).

The spelling of 23655641 in words is "twenty-three million, six hundred fifty-five thousand, six hundred forty-one".