245447663 has 2 divisors, whose sum is σ = 245447664. Its totient is φ = 245447662.

The previous prime is 245447647. The next prime is 245447747. The reversal of 245447663 is 366744542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245447663 - 2⁴ = 245447647 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245447663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245447623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122723831 + 122723832.

It is an arithmetic number, because the mean of its divisors is an integer number (122723832).

Almost surely, 2^245447663 is an apocalyptic number.

245447663 is a deficient number, since it is larger than the sum of its proper divisors (1).

245447663 is an equidigital number, since it uses as much as digits as its factorization.

245447663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 41.

The square root of 245447663 is about 15666.7693861881. The cubic root of 245447663 is about 626.1133546221.

The spelling of 245447663 in words is "two hundred forty-five million, four hundred forty-seven thousand, six hundred sixty-three".