663251363 has 2 divisors, whose sum is σ = 663251364. Its totient is φ = 663251362.

The previous prime is 663251359. The next prime is 663251389. The reversal of 663251363 is 363152366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663251363 - 2² = 663251359 is a prime.

It is not a weakly prime, because it can be changed into another prime (663271363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331625681 + 331625682.

It is an arithmetic number, because the mean of its divisors is an integer number (331625682).

Almost surely, 2^663251363 is an apocalyptic number.

663251363 is a deficient number, since it is larger than the sum of its proper divisors (1).

663251363 is an equidigital number, since it uses as much as digits as its factorization.

663251363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 35.

The square root of 663251363 is about 25753.6669816164. Note that the first 3 decimals coincide. The cubic root of 663251363 is about 872.0861387531.

The spelling of 663251363 in words is "six hundred sixty-three million, two hundred fifty-one thousand, three hundred sixty-three".