6630631 has 6 divisors (see below), whose sum is σ = 7713240. Its totient is φ = 5683356.

The previous prime is 6630607. The next prime is 6630641. The reversal of 6630631 is 1360366.

It is not a de Polignac number, because 6630631 - 2⁵ = 6630599 is a prime.

It is a super-2 number, since 2×6630631² = 87930534916322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6630596 and 6630605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6630641) 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 in 5 ways as a sum of consecutive naturals, for example, 67611 + ... + 67708.

It is an arithmetic number, because the mean of its divisors is an integer number (1285540).

Almost surely, 2^6630631 is an apocalyptic number.

6630631 is a deficient number, since it is larger than the sum of its proper divisors (1082609).

6630631 is a wasteful number, since it uses less digits than its factorization.

6630631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135333 (or 135326 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 6630631 is about 2575.0011650483. The cubic root of 6630631 is about 187.8674843279.

Adding to 6630631 its reverse (1360366), we get a palindrome (7990997).

The spelling of 6630631 in words is "six million, six hundred thirty thousand, six hundred thirty-one".