6634669663 has 2 divisors, whose sum is σ = 6634669664. Its totient is φ = 6634669662.

The previous prime is 6634669597. The next prime is 6634669667. The reversal of 6634669663 is 3669664366.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6634669663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6634669667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3317334831 + 3317334832.

It is an arithmetic number, because the mean of its divisors is an integer number (3317334832).

Almost surely, 2^6634669663 is an apocalyptic number.

6634669663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6634669663 is an equidigital number, since it uses as much as digits as its factorization.

6634669663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15116544, while the sum is 55.

The square root of 6634669663 is about 81453.4815891868. The cubic root of 6634669663 is about 1879.0561943473.

The spelling of 6634669663 in words is "six billion, six hundred thirty-four million, six hundred sixty-nine thousand, six hundred sixty-three".