6631630 has 8 divisors (see below), whose sum is σ = 11936952. Its totient is φ = 2652648.

The previous prime is 6631619. The next prime is 6631637. The reversal of 6631630 is 361366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6631595 and 6631604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331572 + ... + 331591.

It is an arithmetic number, because the mean of its divisors is an integer number (1492119).

Almost surely, 2^6631630 is an apocalyptic number.

6631630 is a deficient number, since it is larger than the sum of its proper divisors (5305322).

6631630 is a wasteful number, since it uses less digits than its factorization.

6631630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663170.

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

The square root of 6631630 is about 2575.1951382371. The cubic root of 6631630 is about 187.8769188343.

Adding to 6631630 its reverse (361366), we get a palindrome (6992996).

The spelling of 6631630 in words is "six million, six hundred thirty-one thousand, six hundred thirty".