6631663210 has 8 divisors (see below), whose sum is σ = 11936993796. Its totient is φ = 2652665280.

The previous prime is 6631663193. The next prime is 6631663211. The reversal of 6631663210 is 123661366.

It can be written as a sum of positive squares in 2 ways, for example, as 6106015881 + 525647329 = 78141^2 + 22927^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6631663211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331583151 + ... + 331583170.

Almost surely, 2^6631663210 is an apocalyptic number.

6631663210 is a deficient number, since it is larger than the sum of its proper divisors (5305330586).

6631663210 is a wasteful number, since it uses less digits than its factorization.

6631663210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663166328.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 6631663210 is about 81435.0244673629. The cubic root of 6631663210 is about 1878.7723245167.

The spelling of 6631663210 in words is "six billion, six hundred thirty-one million, six hundred sixty-three thousand, two hundred ten".