245647361 has 2 divisors, whose sum is σ = 245647362. Its totient is φ = 245647360.

The previous prime is 245647349. The next prime is 245647397. The reversal of 245647361 is 163746542.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145347136 + 100300225 = 12056^2 + 10015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245647361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245647301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122823680 + 122823681.

It is an arithmetic number, because the mean of its divisors is an integer number (122823681).

Almost surely, 2^245647361 is an apocalyptic number.

It is an amenable number.

245647361 is a deficient number, since it is larger than the sum of its proper divisors (1).

245647361 is an equidigital number, since it uses as much as digits as its factorization.

245647361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 245647361 is about 15673.1413890132. The cubic root of 245647361 is about 626.2831120482.

The spelling of 245647361 in words is "two hundred forty-five million, six hundred forty-seven thousand, three hundred sixty-one".