66063172 has 48 divisors (see below), whose sum is σ = 136080000. Its totient is φ = 28049952.

The previous prime is 66063163. The next prime is 66063203. The reversal of 66063172 is 27136066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245454 + ... + 245722.

It is an arithmetic number, because the mean of its divisors is an integer number (2835000).

Almost surely, 2^66063172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66063172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68040000).

66063172 is an abundant number, since it is smaller than the sum of its proper divisors (70016828).

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

66063172 is a wasteful number, since it uses less digits than its factorization.

66063172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 66063172 is about 8127.9254425714. The cubic root of 66063172 is about 404.2528969140.

The spelling of 66063172 in words is "sixty-six million, sixty-three thousand, one hundred seventy-two".