66027156 has 24 divisors (see below), whose sum is σ = 165914784. Its totient is φ = 20316000.

The previous prime is 66027139. The next prime is 66027197. The reversal of 66027156 is 65172066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211470 + ... + 211781.

It is an arithmetic number, because the mean of its divisors is an integer number (6913116).

Almost surely, 2^66027156 is an apocalyptic number.

It is an amenable number.

66027156 is an abundant number, since it is smaller than the sum of its proper divisors (99887628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66027156 is a wasteful number, since it uses less digits than its factorization.

66027156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423271 (or 423269 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 66027156 is about 8125.7095690161. The cubic root of 66027156 is about 404.1794206814.

The spelling of 66027156 in words is "sixty-six million, twenty-seven thousand, one hundred fifty-six".