23649901 has 4 divisors (see below), whose sum is σ = 25799904. Its totient is φ = 21499900.

The previous prime is 23649853. The next prime is 23649917. The reversal of 23649901 is 10994632.

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 not a de Polignac number, because 23649901 - 2¹¹ = 23647853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23649991) 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, 1074985 + ... + 1075006.

It is an arithmetic number, because the mean of its divisors is an integer number (6449976).

Almost surely, 2^23649901 is an apocalyptic number.

It is an amenable number.

23649901 is a deficient number, since it is larger than the sum of its proper divisors (2150003).

23649901 is a wasteful number, since it uses less digits than its factorization.

23649901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150002.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 23649901 is about 4863.1163876675. The cubic root of 23649901 is about 287.0404545029.

The spelling of 23649901 in words is "twenty-three million, six hundred forty-nine thousand, nine hundred one".