23775779 has 2 divisors, whose sum is σ = 23775780. Its totient is φ = 23775778.

The previous prime is 23775769. The next prime is 23775803. The reversal of 23775779 is 97757732.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23775779 - 2⁸ = 23775523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23775709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11887889 + 11887890.

It is an arithmetic number, because the mean of its divisors is an integer number (11887890).

Almost surely, 2^23775779 is an apocalyptic number.

23775779 is a deficient number, since it is larger than the sum of its proper divisors (1).

23775779 is an equidigital number, since it uses as much as digits as its factorization.

23775779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648270, while the sum is 47.

The square root of 23775779 is about 4876.0413246813. The cubic root of 23775779 is about 287.5488169153.

The spelling of 23775779 in words is "twenty-three million, seven hundred seventy-five thousand, seven hundred seventy-nine".