6630479731 has 8 divisors (see below), whose sum is σ = 6657147440. Its totient is φ = 6603835392.

The previous prime is 6630479711. The next prime is 6630479743. The reversal of 6630479731 is 1379740366.

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

It is a cyclic number.

It is not a de Polignac number, because 6630479731 - 2²⁵ = 6596925299 is a prime.

It is a super-2 number, since 2×6630479731² = 87926522926403664722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6630479711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756631 + ... + 765343.

It is an arithmetic number, because the mean of its divisors is an integer number (832143430).

Almost surely, 2^6630479731 is an apocalyptic number.

6630479731 is a deficient number, since it is larger than the sum of its proper divisors (26667709).

6630479731 is a wasteful number, since it uses less digits than its factorization.

6630479731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11685.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 6630479731 is about 81427.7577426764. The cubic root of 6630479731 is about 1878.6605566840.

The spelling of 6630479731 in words is "six billion, six hundred thirty million, four hundred seventy-nine thousand, seven hundred thirty-one".