66412452 has 24 divisors (see below), whose sum is σ = 155192800. Its totient is φ = 22104576.

The previous prime is 66412441. The next prime is 66412471. The reversal of 66412452 is 25421466.

It is a super-2 number, since 2×66412452² = 8821227561304608, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 5124 + ... + 12612.

Almost surely, 2^66412452 is an apocalyptic number.

It is an amenable number.

66412452 is an abundant number, since it is smaller than the sum of its proper divisors (88780348).

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

66412452 is a wasteful number, since it uses less digits than its factorization.

66412452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8235 (or 8233 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 66412452 is about 8149.3835349675. The cubic root of 66412452 is about 404.9640815578.

The spelling of 66412452 in words is "sixty-six million, four hundred twelve thousand, four hundred fifty-two".