23764397 has 4 divisors (see below), whose sum is σ = 24406716. Its totient is φ = 23122080.

The previous prime is 23764361. The next prime is 23764409. The reversal of 23764397 is 79346732.

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 13645636 + 10118761 = 3694^2 + 3181^2 .

It is a cyclic number.

It is not a de Polignac number, because 23764397 - 2⁶ = 23764333 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 (23764357) 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, 321104 + ... + 321177.

It is an arithmetic number, because the mean of its divisors is an integer number (6101679).

Almost surely, 2^23764397 is an apocalyptic number.

It is an amenable number.

23764397 is a deficient number, since it is larger than the sum of its proper divisors (642319).

23764397 is an equidigital number, since it uses as much as digits as its factorization.

23764397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642318.

The product of its digits is 190512, while the sum is 41.

The square root of 23764397 is about 4874.8740496550. The cubic root of 23764397 is about 287.5029242299.

The spelling of 23764397 in words is "twenty-three million, seven hundred sixty-four thousand, three hundred ninety-seven".