245616779 has 2 divisors, whose sum is σ = 245616780. Its totient is φ = 245616778.

The previous prime is 245616757. The next prime is 245616809. The reversal of 245616779 is 977616542.

245616779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245616779 - 2⁸ = 245616523 is a prime.

It is not a weakly prime, because it can be changed into another prime (245676779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122808389 + 122808390.

It is an arithmetic number, because the mean of its divisors is an integer number (122808390).

Almost surely, 2^245616779 is an apocalyptic number.

245616779 is a deficient number, since it is larger than the sum of its proper divisors (1).

245616779 is an equidigital number, since it uses as much as digits as its factorization.

245616779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 245616779 is about 15672.1657405733. The cubic root of 245616779 is about 626.2571211523.

The spelling of 245616779 in words is "two hundred forty-five million, six hundred sixteen thousand, seven hundred seventy-nine".