23691644 has 6 divisors (see below), whose sum is σ = 41460384. Its totient is φ = 11845820.

The previous prime is 23691643. The next prime is 23691649. The reversal of 23691644 is 44619632.

It is a super-2 number, since 2×23691644² = 1122587990845472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23691643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2961452 + ... + 2961459.

It is an arithmetic number, because the mean of its divisors is an integer number (6910064).

Almost surely, 2^23691644 is an apocalyptic number.

It is an amenable number.

23691644 is a deficient number, since it is larger than the sum of its proper divisors (17768740).

23691644 is a wasteful number, since it uses less digits than its factorization.

23691644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5922915 (or 5922913 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 23691644 is about 4867.4062908288. The cubic root of 23691644 is about 287.2092344493.

The spelling of 23691644 in words is "twenty-three million, six hundred ninety-one thousand, six hundred forty-four".