66332472 has 32 divisors (see below), whose sum is σ = 168107280. Its totient is φ = 21807360.

The previous prime is 66332459. The next prime is 66332473. The reversal of 66332472 is 27423366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66332473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17179 + ... + 20682.

Almost surely, 2^66332472 is an apocalyptic number.

It is an amenable number.

66332472 is an abundant number, since it is smaller than the sum of its proper divisors (101774808).

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

66332472 is a wasteful number, since it uses less digits than its factorization.

66332472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37943 (or 37939 counting only the distinct ones).

The product of its digits is 36288, while the sum is 33.

The square root of 66332472 is about 8144.4749370355. The cubic root of 66332472 is about 404.8014512230.

The spelling of 66332472 in words is "sixty-six million, three hundred thirty-two thousand, four hundred seventy-two".