245676689 has 2 divisors, whose sum is σ = 245676690. Its totient is φ = 245676688.

The previous prime is 245676679. The next prime is 245676703. The reversal of 245676689 is 986676542.

245676689 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 can be written as a sum of positive squares in only one way, i.e., 244609600 + 1067089 = 15640^2 + 1033^2 .

It is a cyclic number.

It is not a de Polignac number, because 245676689 - 2⁸ = 245676433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245676689.

It is not a weakly prime, because it can be changed into another prime (245676659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122838344 + 122838345.

It is an arithmetic number, because the mean of its divisors is an integer number (122838345).

Almost surely, 2^245676689 is an apocalyptic number.

It is an amenable number.

245676689 is a deficient number, since it is larger than the sum of its proper divisors (1).

245676689 is an equidigital number, since it uses as much as digits as its factorization.

245676689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 53.

The square root of 245676689 is about 15674.0769744186. The cubic root of 245676689 is about 626.3080351740.

The spelling of 245676689 in words is "two hundred forty-five million, six hundred seventy-six thousand, six hundred eighty-nine".