23216653 has 4 divisors (see below), whose sum is σ = 23226588. Its totient is φ = 23206720.

The previous prime is 23216621. The next prime is 23216663. The reversal of 23216653 is 35661232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3697929 + 19518724 = 1923^2 + 4418^2 .

It is a cyclic number.

It is not a de Polignac number, because 23216653 - 2⁵ = 23216621 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 (23216663) 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, 675 + ... + 6847.

It is an arithmetic number, because the mean of its divisors is an integer number (5806647).

Almost surely, 2^23216653 is an apocalyptic number.

It is an amenable number.

23216653 is a deficient number, since it is larger than the sum of its proper divisors (9935).

23216653 is an equidigital number, since it uses as much as digits as its factorization.

23216653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9934.

The product of its digits is 6480, while the sum is 28.

The square root of 23216653 is about 4818.3662168831. The cubic root of 23216653 is about 285.2768541891.

Adding to 23216653 its reverse (35661232), we get a palindrome (58877885).

The spelling of 23216653 in words is "twenty-three million, two hundred sixteen thousand, six hundred fifty-three".