23895661 has 4 divisors (see below), whose sum is σ = 24478524. Its totient is φ = 23312800.

The previous prime is 23895631. The next prime is 23895667. The reversal of 23895661 is 16659832.

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 4368100 + 19527561 = 2090^2 + 4419^2 .

It is a cyclic number.

It is not a de Polignac number, because 23895661 - 2¹¹ = 23893613 is a prime.

It is a super-2 number, since 2×23895661² = 1142005229253842, 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 (23895667) 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, 291370 + ... + 291451.

It is an arithmetic number, because the mean of its divisors is an integer number (6119631).

Almost surely, 2^23895661 is an apocalyptic number.

It is an amenable number.

23895661 is a deficient number, since it is larger than the sum of its proper divisors (582863).

23895661 is an equidigital number, since it uses as much as digits as its factorization.

23895661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582862.

The product of its digits is 77760, while the sum is 40.

The square root of 23895661 is about 4888.3188316639. The cubic root of 23895661 is about 288.0312988425.

The spelling of 23895661 in words is "twenty-three million, eight hundred ninety-five thousand, six hundred sixty-one".