23337661 has 4 divisors (see below), whose sum is σ = 23347324. Its totient is φ = 23328000.

The previous prime is 23337659. The next prime is 23337667. The reversal of 23337661 is 16673332.

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 18020025 + 5317636 = 4245^2 + 2306^2 .

It is a 6-Lehmer number, since φ(23337661) divides (23337661-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 23337661 - 2¹ = 23337659 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 (23337667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371 + ... + 7231.

It is an arithmetic number, because the mean of its divisors is an integer number (5836831).

Almost surely, 2^23337661 is an apocalyptic number.

It is an amenable number.

23337661 is a deficient number, since it is larger than the sum of its proper divisors (9663).

23337661 is an equidigital number, since it uses as much as digits as its factorization.

23337661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9662.

The product of its digits is 13608, while the sum is 31.

The square root of 23337661 is about 4830.9068506855. The cubic root of 23337661 is about 285.7716280503.

The spelling of 23337661 in words is "twenty-three million, three hundred thirty-seven thousand, six hundred sixty-one".