66049424 has 40 divisors (see below), whose sum is σ = 146919168. Its totient is φ = 28177920.

The previous prime is 66049421. The next prime is 66049439. The reversal of 66049424 is 42494066.

It is not an unprimeable number, because it can be changed into a prime (66049421) 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, 25769 + ... + 28215.

Almost surely, 2^66049424 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 66049424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73459584).

66049424 is an abundant number, since it is smaller than the sum of its proper divisors (80869744).

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

66049424 is a wasteful number, since it uses less digits than its factorization.

66049424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703 (or 2697 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 66049424 is about 8127.0796723054. The cubic root of 66049424 is about 404.2248527747.

The spelling of 66049424 in words is "sixty-six million, forty-nine thousand, four hundred twenty-four".