6631000 has 64 divisors (see below), whose sum is σ = 16380000. Its totient is φ = 2505600.

The previous prime is 6630983. The next prime is 6631021. The reversal of 6631000 is 1366.

It is a happy number.

It is a super-2 number, since 2×6631000² = 87940322000000, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18826 + ... + 19174.

Almost surely, 2^6631000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6631000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8190000).

6631000 is an abundant number, since it is smaller than the sum of its proper divisors (9749000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6631000 is a wasteful number, since it uses less digits than its factorization.

6631000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 6631000 is about 2575.0728145045. The cubic root of 6631000 is about 187.8709692560.

Adding to 6631000 its reverse (1366), we get a palindrome (6632366).

The spelling of 6631000 in words is "six million, six hundred thirty-one thousand".