66027071 has 16 divisors (see below), whose sum is σ = 77078400. Its totient is φ = 55922400.

The previous prime is 66027067. The next prime is 66027079. The reversal of 66027071 is 17072066.

It is a cyclic number.

It is not a de Polignac number, because 66027071 - 2² = 66027067 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 (66027079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10160 + ... + 15338.

It is an arithmetic number, because the mean of its divisors is an integer number (4817400).

Almost surely, 2^66027071 is an apocalyptic number.

66027071 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

66027071 is a deficient number, since it is larger than the sum of its proper divisors (11051329).

66027071 is a wasteful number, since it uses less digits than its factorization.

66027071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 66027071 is about 8125.7043387020. The cubic root of 66027071 is about 404.1792472413.

The spelling of 66027071 in words is "sixty-six million, twenty-seven thousand, seventy-one".