245677823 has 2 divisors, whose sum is σ = 245677824. Its totient is φ = 245677822.

The previous prime is 245677807. The next prime is 245677849. The reversal of 245677823 is 328776542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245677823 - 2⁴ = 245677807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245677723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122838911 + 122838912.

It is an arithmetic number, because the mean of its divisors is an integer number (122838912).

Almost surely, 2^245677823 is an apocalyptic number.

245677823 is a deficient number, since it is larger than the sum of its proper divisors (1).

245677823 is an equidigital number, since it uses as much as digits as its factorization.

245677823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 44.

The square root of 245677823 is about 15674.1131487558. The cubic root of 245677823 is about 626.3089988147.

The spelling of 245677823 in words is "two hundred forty-five million, six hundred seventy-seven thousand, eight hundred twenty-three".