23665001 has 4 divisors (see below), whose sum is σ = 23739972. Its totient is φ = 23590032.

The previous prime is 23664973. The next prime is 23665021. The reversal of 23665001 is 10056632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9610000 + 14055001 = 3100^2 + 3749^2 .

It is a cyclic number.

It is not a de Polignac number, because 23665001 - 2¹⁴ = 23648617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23665021) 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, 37010 + ... + 37643.

It is an arithmetic number, because the mean of its divisors is an integer number (5934993).

Almost surely, 2^23665001 is an apocalyptic number.

It is an amenable number.

23665001 is a deficient number, since it is larger than the sum of its proper divisors (74971).

23665001 is an equidigital number, since it uses as much as digits as its factorization.

23665001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74970.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 23665001 is about 4864.6686423640. The cubic root of 23665001 is about 287.1015314144.

The spelling of 23665001 in words is "twenty-three million, six hundred sixty-five thousand, one".