20232661 has 8 divisors (see below), whose sum is σ = 20956320. Its totient is φ = 19520592.

The previous prime is 20232659. The next prime is 20232683. The reversal of 20232661 is 16623202.

It is a happy number.

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 20232661 - 2¹ = 20232659 is a prime.

It is a super-2 number, since 2×20232661² = 818721142281842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20236661) 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, 735 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (2619540).

Almost surely, 2^20232661 is an apocalyptic number.

It is an amenable number.

20232661 is a deficient number, since it is larger than the sum of its proper divisors (723659).

20232661 is an equidigital number, since it uses as much as digits as its factorization.

20232661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20232661 is about 4498.0730318660. The cubic root of 20232661 is about 272.4902715153.

Adding to 20232661 its reverse (16623202), we get a palindrome (36855863).

The spelling of 20232661 in words is "twenty million, two hundred thirty-two thousand, six hundred sixty-one".