66403227 has 12 divisors (see below), whose sum is σ = 97318760. Its totient is φ = 40244160.

The previous prime is 66403217. The next prime is 66403229. The reversal of 66403227 is 72230466.

It is not a de Polignac number, because 66403227 - 2¹⁵ = 66370459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66403194 and 66403203.

It is not an unprimeable number, because it can be changed into a prime (66403229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91102 + ... + 91827.

Almost surely, 2^66403227 is an apocalyptic number.

66403227 is a deficient number, since it is larger than the sum of its proper divisors (30915533).

66403227 is a wasteful number, since it uses less digits than its factorization.

66403227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182954 (or 182943 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 66403227 is about 8148.8175215794. The cubic root of 66403227 is about 404.9453302216.

The spelling of 66403227 in words is "sixty-six million, four hundred three thousand, two hundred twenty-seven".