23720761 has 2 divisors, whose sum is σ = 23720762. Its totient is φ = 23720760.

The previous prime is 23720713. The next prime is 23720789. The reversal of 23720761 is 16702732.

It is an a-pointer prime, because the next prime (23720789) can be obtained adding 23720761 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14017536 + 9703225 = 3744^2 + 3115^2 .

It is a cyclic number.

It is not a de Polignac number, because 23720761 - 2⁷ = 23720633 is a prime.

It is not a weakly prime, because it can be changed into another prime (23720791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11860380 + 11860381.

It is an arithmetic number, because the mean of its divisors is an integer number (11860381).

Almost surely, 2^23720761 is an apocalyptic number.

It is an amenable number.

23720761 is a deficient number, since it is larger than the sum of its proper divisors (1).

23720761 is an equidigital number, since it uses as much as digits as its factorization.

23720761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 23720761 is about 4870.3963904389. The cubic root of 23720761 is about 287.3268462075.

The spelling of 23720761 in words is "twenty-three million, seven hundred twenty thousand, seven hundred sixty-one".