66740024 has 64 divisors (see below), whose sum is σ = 141066240. Its totient is φ = 29393280.

The previous prime is 66740021. The next prime is 66740041. The reversal of 66740024 is 42004766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66740021) 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 15 ways as a sum of consecutive naturals, for example, 409367 + ... + 409529.

It is an arithmetic number, because the mean of its divisors is an integer number (2204160).

Almost surely, 2^66740024 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 66740024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70533120).

66740024 is an abundant number, since it is smaller than the sum of its proper divisors (74326216).

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

66740024 is a wasteful number, since it uses less digits than its factorization.

66740024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 66740024 is about 8169.4567750861. The cubic root of 66740024 is about 405.6288032277.

The spelling of 66740024 in words is "sixty-six million, seven hundred forty thousand, twenty-four".