23664545 has 16 divisors (see below), whose sum is σ = 29030400. Its totient is φ = 18514944.

The previous prime is 23664521. The next prime is 23664581. The reversal of 23664545 is 54546632.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23664545 - 2¹⁴ = 23648161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52481 + ... + 52929.

It is an arithmetic number, because the mean of its divisors is an integer number (1814400).

Almost surely, 2^23664545 is an apocalyptic number.

It is an amenable number.

23664545 is a deficient number, since it is larger than the sum of its proper divisors (5365855).

23664545 is a wasteful number, since it uses less digits than its factorization.

23664545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664.

The product of its digits is 86400, while the sum is 35.

The square root of 23664545 is about 4864.6217735812. The cubic root of 23664545 is about 287.0996873531.

The spelling of 23664545 in words is "twenty-three million, six hundred sixty-four thousand, five hundred forty-five".