23497639 has 8 divisors (see below), whose sum is σ = 25678080. Its totient is φ = 21324600.

The previous prime is 23497619. The next prime is 23497657. The reversal of 23497639 is 93679432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23497639 - 2⁹ = 23497127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23497595 and 23497604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23497609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6424 + ... + 9394.

It is an arithmetic number, because the mean of its divisors is an integer number (3209760).

Almost surely, 2^23497639 is an apocalyptic number.

23497639 is a deficient number, since it is larger than the sum of its proper divisors (2180441).

23497639 is a wasteful number, since it uses less digits than its factorization.

23497639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701.

The product of its digits is 244944, while the sum is 43.

The square root of 23497639 is about 4847.4363327433. The cubic root of 23497639 is about 286.4231230290.

The spelling of 23497639 in words is "twenty-three million, four hundred ninety-seven thousand, six hundred thirty-nine".