6660746147 has 8 divisors (see below), whose sum is σ = 7267126512. Its totient is φ = 6054508800.

The previous prime is 6660746137. The next prime is 6660746171. The reversal of 6660746147 is 7416470666.

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 6660746147 - 2⁶ = 6660746083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6660746137) 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, 77147 + ... + 138827.

It is an arithmetic number, because the mean of its divisors is an integer number (908390814).

Almost surely, 2^6660746147 is an apocalyptic number.

6660746147 is a deficient number, since it is larger than the sum of its proper divisors (606380365).

6660746147 is a wasteful number, since it uses less digits than its factorization.

6660746147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71509.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 6660746147 is about 81613.3944092512. The cubic root of 6660746147 is about 1881.5147505205.

The spelling of 6660746147 in words is "six billion, six hundred sixty million, seven hundred forty-six thousand, one hundred forty-seven".