23057661 has 32 divisors (see below), whose sum is σ = 37075968. Its totient is φ = 12573440.

The previous prime is 23057641. The next prime is 23057669. The reversal of 23057661 is 16675032.

It is not a de Polignac number, because 23057661 - 2¹³ = 23049469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23057669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12010 + ... + 13796.

It is an arithmetic number, because the mean of its divisors is an integer number (1158624).

Almost surely, 2^23057661 is an apocalyptic number.

It is an amenable number.

23057661 is a deficient number, since it is larger than the sum of its proper divisors (14018307).

23057661 is a wasteful number, since it uses less digits than its factorization.

23057661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 23057661 is about 4801.8393350882. The cubic root of 23057661 is about 284.6241521470.

The spelling of 23057661 in words is "twenty-three million, fifty-seven thousand, six hundred sixty-one".