66747024 has 80 divisors (see below), whose sum is σ = 192567040. Its totient is φ = 22135680.

The previous prime is 66747017. The next prime is 66747041. The reversal of 66747024 is 42074766.

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 66747024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158334 + ... + 158754.

It is an arithmetic number, because the mean of its divisors is an integer number (2407088).

Almost surely, 2^66747024 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 66747024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96283520).

66747024 is an abundant number, since it is smaller than the sum of its proper divisors (125820016).

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

66747024 is a wasteful number, since it uses less digits than its factorization.

66747024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 66747024 is about 8169.8851889118. The cubic root of 66747024 is about 405.6429841354.

The spelling of 66747024 in words is "sixty-six million, seven hundred forty-seven thousand, twenty-four".