6660131306 has 8 divisors (see below), whose sum is σ = 9991001700. Its totient is φ = 3329797408.

The previous prime is 6660131299. The next prime is 6660131369. The reversal of 6660131306 is 6031310666.

It can be written as a sum of positive squares in 2 ways, for example, as 6098204281 + 561927025 = 78091^2 + 23705^2 .

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

It is a super-2 number, since 2×6660131306² = 88714698026322531272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101501 + ... + 153696.

Almost surely, 2^6660131306 is an apocalyptic number.

6660131306 is a deficient number, since it is larger than the sum of its proper divisors (3330870394).

6660131306 is a wasteful number, since it uses less digits than its factorization.

6660131306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268248.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 6660131306 is about 81609.6275325405. The cubic root of 6660131306 is about 1881.4568557050.

The spelling of 6660131306 in words is "six billion, six hundred sixty million, one hundred thirty-one thousand, three hundred six".