23764921 has 2 divisors, whose sum is σ = 23764922. Its totient is φ = 23764920.

The previous prime is 23764913. The next prime is 23764973. The reversal of 23764921 is 12946732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22467600 + 1297321 = 4740^2 + 1139^2 .

It is a cyclic number.

It is not a de Polignac number, because 23764921 - 2³ = 23764913 is a prime.

It is not a weakly prime, because it can be changed into another prime (23764901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11882460 + 11882461.

It is an arithmetic number, because the mean of its divisors is an integer number (11882461).

Almost surely, 2^23764921 is an apocalyptic number.

It is an amenable number.

23764921 is a deficient number, since it is larger than the sum of its proper divisors (1).

23764921 is an equidigital number, since it uses as much as digits as its factorization.

23764921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 23764921 is about 4874.9277943371. The cubic root of 23764921 is about 287.5050373409.

The spelling of 23764921 in words is "twenty-three million, seven hundred sixty-four thousand, nine hundred twenty-one".