66284724 has 48 divisors (see below), whose sum is σ = 169202880. Its totient is φ = 20029440.

The previous prime is 66284707. The next prime is 66284759. The reversal of 66284724 is 42748266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85812 + ... + 86580.

It is an arithmetic number, because the mean of its divisors is an integer number (3525060).

Almost surely, 2^66284724 is an apocalyptic number.

It is an amenable number.

66284724 is an abundant number, since it is smaller than the sum of its proper divisors (102918156).

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

66284724 is a wasteful number, since it uses less digits than its factorization.

66284724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440 (or 1438 counting only the distinct ones).

The product of its digits is 129024, while the sum is 39.

The square root of 66284724 is about 8141.5430969811. The cubic root of 66284724 is about 404.7042987089.

The spelling of 66284724 in words is "sixty-six million, two hundred eighty-four thousand, seven hundred twenty-four".