23021663 has 8 divisors (see below), whose sum is σ = 26807328. Its totient is φ = 19360224.

The previous prime is 23021657. The next prime is 23021693. The reversal of 23021663 is 36612032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23021663 - 2¹² = 23017567 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 (23021653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30656 + ... + 31397.

It is an arithmetic number, because the mean of its divisors is an integer number (3350916).

Almost surely, 2^23021663 is an apocalyptic number.

23021663 is a deficient number, since it is larger than the sum of its proper divisors (3785665).

23021663 is an equidigital number, since it uses as much as digits as its factorization.

23021663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62113.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 23021663 is about 4798.0895156302. The cubic root of 23021663 is about 284.4759550267.

Adding to 23021663 its reverse (36612032), we get a palindrome (59633695).

The spelling of 23021663 in words is "twenty-three million, twenty-one thousand, six hundred sixty-three".