66424832 has 26 divisors (see below), whose sum is σ = 132841638. Its totient is φ = 33210368.

The previous prime is 66424829. The next prime is 66424837. The reversal of 66424832 is 23842466.

It can be written as a sum of positive squares in only one way, i.e., 62980096 + 3444736 = 7936^2 + 1856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66424792 and 66424801.

It is not an unprimeable number, because it can be changed into a prime (66424837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4013 + ... + 12204.

Almost surely, 2^66424832 is an apocalyptic number.

It is an amenable number.

66424832 is a deficient number, since it is larger than the sum of its proper divisors (66416806).

66424832 is an equidigital number, since it uses as much as digits as its factorization.

66424832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16241 (or 16219 counting only the distinct ones).

The product of its digits is 55296, while the sum is 35.

The square root of 66424832 is about 8150.1430662290. The cubic root of 66424832 is about 404.9892432239.

The spelling of 66424832 in words is "sixty-six million, four hundred twenty-four thousand, eight hundred thirty-two".