66432724 has 12 divisors (see below), whose sum is σ = 116424000. Its totient is φ = 33168728.

The previous prime is 66432713. The next prime is 66432731. The reversal of 66432724 is 42723466.

It is a self number, because there is not a number n which added to its sum of digits gives 66432724.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8674 + ... + 14425.

It is an arithmetic number, because the mean of its divisors is an integer number (9702000).

Almost surely, 2^66432724 is an apocalyptic number.

It is an amenable number.

66432724 is a deficient number, since it is larger than the sum of its proper divisors (49991276).

66432724 is a wasteful number, since it uses less digits than its factorization.

66432724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23822 (or 23820 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The square root of 66432724 is about 8150.6272151289. The cubic root of 66432724 is about 405.0052816463.

The spelling of 66432724 in words is "sixty-six million, four hundred thirty-two thousand, seven hundred twenty-four".