663101399 has 2 divisors, whose sum is σ = 663101400. Its totient is φ = 663101398.

The previous prime is 663101347. The next prime is 663101401. The reversal of 663101399 is 993101366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663101399 - 2⁸ = 663101143 is a prime.

Together with 663101401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663101599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331550699 + 331550700.

It is an arithmetic number, because the mean of its divisors is an integer number (331550700).

Almost surely, 2^663101399 is an apocalyptic number.

663101399 is a deficient number, since it is larger than the sum of its proper divisors (1).

663101399 is an equidigital number, since it uses as much as digits as its factorization.

663101399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 663101399 is about 25750.7553093108. The cubic root of 663101399 is about 872.0204063169.

The spelling of 663101399 in words is "six hundred sixty-three million, one hundred one thousand, three hundred ninety-nine".