23704991 has 2 divisors, whose sum is σ = 23704992. Its totient is φ = 23704990.

The previous prime is 23704981. The next prime is 23704999. The reversal of 23704991 is 19940732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23704991 - 2¹⁴ = 23688607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23704999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11852495 + 11852496.

It is an arithmetic number, because the mean of its divisors is an integer number (11852496).

Almost surely, 2^23704991 is an apocalyptic number.

23704991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23704991 is an equidigital number, since it uses as much as digits as its factorization.

23704991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 23704991 is about 4868.7771565353. Note that the first 3 decimals coincide. The cubic root of 23704991 is about 287.2631586939.

The spelling of 23704991 in words is "twenty-three million, seven hundred four thousand, nine hundred ninety-one".