66687027 has 8 divisors (see below), whose sum is σ = 96999360. Its totient is φ = 40416360.

The previous prime is 66687011. The next prime is 66687053. The reversal of 66687027 is 72078666.

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

It is not a de Polignac number, because 66687027 - 2⁴ = 66687011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66687027.

It is not an unprimeable number, because it can be changed into a prime (66687007) 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, 1010377 + ... + 1010442.

It is an arithmetic number, because the mean of its divisors is an integer number (12124920).

Almost surely, 2^66687027 is an apocalyptic number.

66687027 is a deficient number, since it is larger than the sum of its proper divisors (30312333).

66687027 is a wasteful number, since it uses less digits than its factorization.

66687027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020833.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 66687027 is about 8166.2125247877. The cubic root of 66687027 is about 405.5214073901.

It can be divided in two parts, 6668 and 7027, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 66687027 in words is "sixty-six million, six hundred eighty-seven thousand, twenty-seven".