66532275 has 18 divisors (see below), whose sum is σ = 119167100. Its totient is φ = 35483760.

The previous prime is 66532247. The next prime is 66532289. The reversal of 66532275 is 57223566.

It is a happy number.

It is not a de Polignac number, because 66532275 - 2⁸ = 66532019 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 147625 + ... + 148074.

Almost surely, 2^66532275 is an apocalyptic number.

66532275 is a deficient number, since it is larger than the sum of its proper divisors (52634825).

66532275 is a wasteful number, since it uses less digits than its factorization.

66532275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295715 (or 295707 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 66532275 is about 8156.7318823166. The cubic root of 66532275 is about 405.2074839929.

The spelling of 66532275 in words is "sixty-six million, five hundred thirty-two thousand, two hundred seventy-five".