66285452 has 12 divisors (see below), whose sum is σ = 122104920. Its totient is φ = 31398336.

The previous prime is 66285449. The next prime is 66285487. The reversal of 66285452 is 25458266.

It is a super-2 number, since 2×66285452² = 8787522293688608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436013 + ... + 436164.

It is an arithmetic number, because the mean of its divisors is an integer number (10175410).

Almost surely, 2^66285452 is an apocalyptic number.

It is an amenable number.

66285452 is a deficient number, since it is larger than the sum of its proper divisors (55819468).

66285452 is a wasteful number, since it uses less digits than its factorization.

66285452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872200 (or 872198 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 66285452 is about 8141.5878058276. The cubic root of 66285452 is about 404.7057803154.

The spelling of 66285452 in words is "sixty-six million, two hundred eighty-five thousand, four hundred fifty-two".