253666463 has 2 divisors, whose sum is σ = 253666464. Its totient is φ = 253666462.

The previous prime is 253666423. The next prime is 253666493. The reversal of 253666463 is 364666352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253666463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253666463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253666403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126833231 + 126833232.

It is an arithmetic number, because the mean of its divisors is an integer number (126833232).

Almost surely, 2^253666463 is an apocalyptic number.

253666463 is a deficient number, since it is larger than the sum of its proper divisors (1).

253666463 is an equidigital number, since it uses as much as digits as its factorization.

253666463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 41.

The square root of 253666463 is about 15926.9100267440. The cubic root of 253666463 is about 633.0252272057.

The spelling of 253666463 in words is "two hundred fifty-three million, six hundred sixty-six thousand, four hundred sixty-three".