23421617 has 2 divisors, whose sum is σ = 23421618. Its totient is φ = 23421616.

The previous prime is 23421611. The next prime is 23421641. The reversal of 23421617 is 71612432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18241441 + 5180176 = 4271^2 + 2276^2 .

It is a cyclic number.

It is not a de Polignac number, because 23421617 - 2¹⁸ = 23159473 is a prime.

It is not a weakly prime, because it can be changed into another prime (23421611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710808 + 11710809.

It is an arithmetic number, because the mean of its divisors is an integer number (11710809).

Almost surely, 2^23421617 is an apocalyptic number.

It is an amenable number.

23421617 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421617 is an equidigital number, since it uses as much as digits as its factorization.

23421617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 23421617 is about 4839.5885155662. The cubic root of 23421617 is about 286.1139007098.

The spelling of 23421617 in words is "twenty-three million, four hundred twenty-one thousand, six hundred seventeen".