23829661 has 4 divisors (see below), whose sum is σ = 24097500. Its totient is φ = 23561824.

The previous prime is 23829623. The next prime is 23829709. The reversal of 23829661 is 16692832.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3308761 + 20520900 = 1819^2 + 4530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23829661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23829661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23829601) 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, 133786 + ... + 133963.

It is an arithmetic number, because the mean of its divisors is an integer number (6024375).

Almost surely, 2^23829661 is an apocalyptic number.

It is an amenable number.

23829661 is a deficient number, since it is larger than the sum of its proper divisors (267839).

23829661 is an equidigital number, since it uses as much as digits as its factorization.

23829661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267838.

The product of its digits is 31104, while the sum is 37.

The square root of 23829661 is about 4881.5633766243. The cubic root of 23829661 is about 287.7658727663.

The spelling of 23829661 in words is "twenty-three million, eight hundred twenty-nine thousand, six hundred sixty-one".