663214667 has 2 divisors, whose sum is σ = 663214668. Its totient is φ = 663214666.

The previous prime is 663214649. The next prime is 663214679. The reversal of 663214667 is 766412366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663214667 - 2¹⁰ = 663213643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (663214687) 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, 331607333 + 331607334.

It is an arithmetic number, because the mean of its divisors is an integer number (331607334).

Almost surely, 2^663214667 is an apocalyptic number.

663214667 is a deficient number, since it is larger than the sum of its proper divisors (1).

663214667 is an equidigital number, since it uses as much as digits as its factorization.

663214667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 41.

The square root of 663214667 is about 25752.9545295292. The cubic root of 663214667 is about 872.0700550253.

The spelling of 663214667 in words is "six hundred sixty-three million, two hundred fourteen thousand, six hundred sixty-seven".