66134244 has 72 divisors (see below), whose sum is σ = 174342784. Its totient is φ = 19483200.

The previous prime is 66134203. The next prime is 66134249. The reversal of 66134244 is 44243166.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (66134249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53109 + ... + 54339.

Almost surely, 2^66134244 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 66134244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87171392).

66134244 is an abundant number, since it is smaller than the sum of its proper divisors (108208540).

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

66134244 is a wasteful number, since it uses less digits than its factorization.

66134244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1284 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 66134244 is about 8132.2963546590. The cubic root of 66134244 is about 404.3978125759.

The spelling of 66134244 in words is "sixty-six million, one hundred thirty-four thousand, two hundred forty-four".