660000133747 has 8 divisors (see below), whose sum is σ = 689063533344. Its totient is φ = 630967379328.

The previous prime is 660000133699. The next prime is 660000133757. The reversal of 660000133747 is 747331000066.

660000133747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 660000133747 - 2³⁵ = 625640395379 is a prime.

It is a super-3 number, since 3×660000133747³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660000133757) 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, 7617268 + ... + 7703425.

It is an arithmetic number, because the mean of its divisors is an integer number (86132941668).

Almost surely, 2^660000133747 is an apocalyptic number.

660000133747 is a deficient number, since it is larger than the sum of its proper divisors (29063399597).

660000133747 is a wasteful number, since it uses less digits than its factorization.

660000133747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15322589.

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 660000133747 in words is "six hundred sixty billion, one hundred thirty-three thousand, seven hundred forty-seven".