23620661 has 4 divisors (see below), whose sum is σ = 23752800. Its totient is φ = 23488524.

The previous prime is 23620589. The next prime is 23620673. The reversal of 23620661 is 16602632.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23620661 - 2²² = 19426357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 23620661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23620061) 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, 65801 + ... + 66158.

It is an arithmetic number, because the mean of its divisors is an integer number (5938200).

Almost surely, 2^23620661 is an apocalyptic number.

It is an amenable number.

23620661 is a deficient number, since it is larger than the sum of its proper divisors (132139).

23620661 is a wasteful number, since it uses less digits than its factorization.

23620661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132138.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 23620661 is about 4860.1091551528. The cubic root of 23620661 is about 286.9221097617.

The spelling of 23620661 in words is "twenty-three million, six hundred twenty thousand, six hundred sixty-one".