66372072 has 64 divisors (see below), whose sum is σ = 179760000. Its totient is φ = 20300544.

The previous prime is 66372041. The next prime is 66372101. The reversal of 66372072 is 27027366.

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, 61554 + ... + 62622.

It is an arithmetic number, because the mean of its divisors is an integer number (2808750).

Almost surely, 2^66372072 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 66372072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89880000).

66372072 is an abundant number, since it is smaller than the sum of its proper divisors (113387928).

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

66372072 is a wasteful number, since it uses less digits than its factorization.

66372072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 66372072 is about 8146.9056702530. The cubic root of 66372072 is about 404.8819896988.

The spelling of 66372072 in words is "sixty-six million, three hundred seventy-two thousand, seventy-two".