66336424 has 64 divisors (see below), whose sum is σ = 156608640. Its totient is φ = 25589760.

The previous prime is 66336421. The next prime is 66336433. The reversal of 66336424 is 42463366.

It is a super-2 number, since 2×66336424² = 8801042298215552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66336424.

It is not an unprimeable number, because it can be changed into a prime (66336421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69132 + ... + 70084.

It is an arithmetic number, because the mean of its divisors is an integer number (2447010).

Almost surely, 2^66336424 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 66336424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78304320).

66336424 is an abundant number, since it is smaller than the sum of its proper divisors (90272216).

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

66336424 is a wasteful number, since it uses less digits than its factorization.

66336424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090 (or 1086 counting only the distinct ones).

The product of its digits is 62208, while the sum is 34.

The square root of 66336424 is about 8144.7175518860. The cubic root of 66336424 is about 404.8094902398.

The spelling of 66336424 in words is "sixty-six million, three hundred thirty-six thousand, four hundred twenty-four".