245680417 has 2 divisors, whose sum is σ = 245680418. Its totient is φ = 245680416.

The previous prime is 245680403. The next prime is 245680423. The reversal of 245680417 is 714086542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169624576 + 76055841 = 13024^2 + 8721^2 .

It is a cyclic number.

It is not a de Polignac number, because 245680417 - 2¹¹ = 245678369 is a prime.

It is not a weakly prime, because it can be changed into another prime (245680427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122840208 + 122840209.

It is an arithmetic number, because the mean of its divisors is an integer number (122840209).

Almost surely, 2^245680417 is an apocalyptic number.

It is an amenable number.

245680417 is a deficient number, since it is larger than the sum of its proper divisors (1).

245680417 is an equidigital number, since it uses as much as digits as its factorization.

245680417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 245680417 is about 15674.1958964407. The cubic root of 245680417 is about 626.3112031106.

The spelling of 245680417 in words is "two hundred forty-five million, six hundred eighty thousand, four hundred seventeen".