66704727 has 8 divisors (see below), whose sum is σ = 92006640. Its totient is φ = 42936320.

The previous prime is 66704689. The next prime is 66704749. The reversal of 66704727 is 72740766.

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 66704727 - 2⁸ = 66704471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66704227) 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, 383274 + ... + 383447.

It is an arithmetic number, because the mean of its divisors is an integer number (11500830).

Almost surely, 2^66704727 is an apocalyptic number.

66704727 is a deficient number, since it is larger than the sum of its proper divisors (25301913).

66704727 is a wasteful number, since it uses less digits than its factorization.

66704727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766753.

The product of its (nonzero) digits is 98784, while the sum is 39.

The square root of 66704727 is about 8167.2961866214. The cubic root of 66704727 is about 405.5572819036.

The spelling of 66704727 in words is "sixty-six million, seven hundred four thousand, seven hundred twenty-seven".