66983727 has 8 divisors (see below), whose sum is σ = 91725616. Its totient is φ = 43448832.

The previous prime is 66983717. The next prime is 66983729. The reversal of 66983727 is 72738966.

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

It is not a de Polignac number, because 66983727 - 2⁴ = 66983711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66983729) 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, 301618 + ... + 301839.

It is an arithmetic number, because the mean of its divisors is an integer number (11465702).

Almost surely, 2^66983727 is an apocalyptic number.

66983727 is a deficient number, since it is larger than the sum of its proper divisors (24741889).

66983727 is a wasteful number, since it uses less digits than its factorization.

66983727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603497.

The product of its digits is 762048, while the sum is 48.

The square root of 66983727 is about 8184.3586798234. The cubic root of 66983727 is about 406.1219250078.

The spelling of 66983727 in words is "sixty-six million, nine hundred eighty-three thousand, seven hundred twenty-seven".