23401663 has 4 divisors (see below), whose sum is σ = 23488288. Its totient is φ = 23315040.

The previous prime is 23401633. The next prime is 23401667. The reversal of 23401663 is 36610432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23401663 - 2⁹ = 23401151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23401667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42906 + ... + 43447.

It is an arithmetic number, because the mean of its divisors is an integer number (5872072).

Almost surely, 2^23401663 is an apocalyptic number.

23401663 is a deficient number, since it is larger than the sum of its proper divisors (86625).

23401663 is an equidigital number, since it uses as much as digits as its factorization.

23401663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86624.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 23401663 is about 4837.5265373949. The cubic root of 23401663 is about 286.0326262354.

The spelling of 23401663 in words is "twenty-three million, four hundred one thousand, six hundred sixty-three".