66424124 has 12 divisors (see below), whose sum is σ = 125184024. Its totient is φ = 30657264.

The previous prime is 66424109. The next prime is 66424129. The reversal of 66424124 is 42142466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66424129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638642 + ... + 638745.

It is an arithmetic number, because the mean of its divisors is an integer number (10432002).

Almost surely, 2^66424124 is an apocalyptic number.

It is an amenable number.

66424124 is a deficient number, since it is larger than the sum of its proper divisors (58759900).

66424124 is a wasteful number, since it uses less digits than its factorization.

66424124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277404 (or 1277402 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 66424124 is about 8150.0996312929. The cubic root of 66424124 is about 404.9878043373.

The spelling of 66424124 in words is "sixty-six million, four hundred twenty-four thousand, one hundred twenty-four".