66227272 has 16 divisors (see below), whose sum is σ = 124266240. Its totient is φ = 33089616.

The previous prime is 66227219. The next prime is 66227297. The reversal of 66227272 is 27272266.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15213 + ... + 19075.

It is an arithmetic number, because the mean of its divisors is an integer number (7766640).

Almost surely, 2^66227272 is an apocalyptic number.

It is an amenable number.

66227272 is a deficient number, since it is larger than the sum of its proper divisors (58038968).

66227272 is a wasteful number, since it uses less digits than its factorization.

66227272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012 (or 6008 counting only the distinct ones).

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

The square root of 66227272 is about 8138.0140083438. The cubic root of 66227272 is about 404.5873396732.

It can be divided in two parts, 6622 and 7272, that multiplied together give a palindrome (48155184).

The spelling of 66227272 in words is "sixty-six million, two hundred twenty-seven thousand, two hundred seventy-two".