66372384 has 72 divisors (see below), whose sum is σ = 188706672. Its totient is φ = 20417280.

The previous prime is 66372379. The next prime is 66372391. The reversal of 66372384 is 48327366.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14179 + ... + 18269.

It is an arithmetic number, because the mean of its divisors is an integer number (2620926).

Almost surely, 2^66372384 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 66372384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94353336).

66372384 is an abundant number, since it is smaller than the sum of its proper divisors (122334288).

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

66372384 is a wasteful number, since it uses less digits than its factorization.

66372384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130 (or 4109 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 66372384 is about 8146.9248186049. The cubic root of 66372384 is about 404.8826241171.

The spelling of 66372384 in words is "sixty-six million, three hundred seventy-two thousand, three hundred eighty-four".