66247027 has 8 divisors (see below), whose sum is σ = 82593792. Its totient is φ = 51621000.

The previous prime is 66247019. The next prime is 66247033. The reversal of 66247027 is 72074266.

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 66247027 - 2³ = 66247019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66246983 and 66247001.

It is not an unprimeable number, because it can be changed into a prime (66247067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430099 + ... + 430252.

It is an arithmetic number, because the mean of its divisors is an integer number (10324224).

Almost surely, 2^66247027 is an apocalyptic number.

66247027 is a deficient number, since it is larger than the sum of its proper divisors (16346765).

66247027 is a wasteful number, since it uses less digits than its factorization.

66247027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860369.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 66247027 is about 8139.2276660627. The cubic root of 66247027 is about 404.6275639296.

The spelling of 66247027 in words is "sixty-six million, two hundred forty-seven thousand, twenty-seven".