6606631 has 2 divisors, whose sum is σ = 6606632. Its totient is φ = 6606630.

The previous prime is 6606629. The next prime is 6606637. The reversal of 6606631 is 1366066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6606631 - 2¹ = 6606629 is a prime.

It is a super-2 number, since 2×6606631² = 87295146340322, which contains 22 as substring.

Together with 6606629, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6606631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6606637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3303315 + 3303316.

It is an arithmetic number, because the mean of its divisors is an integer number (3303316).

Almost surely, 2^6606631 is an apocalyptic number.

6606631 is a deficient number, since it is larger than the sum of its proper divisors (1).

6606631 is an equidigital number, since it uses as much as digits as its factorization.

6606631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 6606631 is about 2570.3367483659. The cubic root of 6606631 is about 187.6405441077.

The spelling of 6606631 in words is "six million, six hundred six thousand, six hundred thirty-one".