66085727 has 8 divisors (see below), whose sum is σ = 68359200. Its totient is φ = 63843840.

The previous prime is 66085697. The next prime is 66085729. The reversal of 66085727 is 72758066.

It is a happy number.

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 66085727 - 2⁸ = 66085471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66085729) 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, 3602 + ... + 12047.

It is an arithmetic number, because the mean of its divisors is an integer number (8544900).

Almost surely, 2^66085727 is an apocalyptic number.

66085727 is a deficient number, since it is larger than the sum of its proper divisors (2273473).

66085727 is a wasteful number, since it uses less digits than its factorization.

66085727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15793.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 66085727 is about 8129.3128245873. The cubic root of 66085727 is about 404.2988977661.

The spelling of 66085727 in words is "sixty-six million, eighty-five thousand, seven hundred twenty-seven".