23713649 has 4 divisors (see below), whose sum is σ = 23729136. Its totient is φ = 23698164.

The previous prime is 23713643. The next prime is 23713663. The reversal of 23713649 is 94631732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23713649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23713643) 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, 5159 + ... + 8604.

It is an arithmetic number, because the mean of its divisors is an integer number (5932284).

Almost surely, 2^23713649 is an apocalyptic number.

It is an amenable number.

23713649 is a deficient number, since it is larger than the sum of its proper divisors (15487).

23713649 is a wasteful number, since it uses less digits than its factorization.

23713649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15486.

The product of its digits is 27216, while the sum is 35.

The square root of 23713649 is about 4869.6662103269. Note that the first 3 decimals coincide. The cubic root of 23713649 is about 287.2981277248.

The spelling of 23713649 in words is "twenty-three million, seven hundred thirteen thousand, six hundred forty-nine".