66396024 has 80 divisors (see below), whose sum is σ = 188469600. Its totient is φ = 21835008.

The previous prime is 66396023. The next prime is 66396061. The reversal of 66396024 is 42069366.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 66396024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66396023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50544 + ... + 51840.

It is an arithmetic number, because the mean of its divisors is an integer number (2355870).

Almost surely, 2^66396024 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 66396024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94234800).

66396024 is an abundant number, since it is smaller than the sum of its proper divisors (122073576).

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

66396024 is a wasteful number, since it uses less digits than its factorization.

66396024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 66396024 is about 8148.3755436283. The cubic root of 66396024 is about 404.9306877270.

The spelling of 66396024 in words is "sixty-six million, three hundred ninety-six thousand, twenty-four".