66424158 has 32 divisors (see below), whose sum is σ = 150400800. Its totient is φ = 21722688.

The previous prime is 66424129. The next prime is 66424177. The reversal of 66424158 is 85142466.

66424158 is a `hidden beast` number, since 6 + 642 + 4 + 1 + 5 + 8 = 666.

It is a super-3 number, since 3×66424158³ (a number of 24 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 8743 + ... + 14466.

It is an arithmetic number, because the mean of its divisors is an integer number (4700025).

Almost surely, 2^66424158 is an apocalyptic number.

66424158 is an abundant number, since it is smaller than the sum of its proper divisors (83976642).

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

66424158 is a wasteful number, since it uses less digits than its factorization.

66424158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23273 (or 23267 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 66424158 is about 8150.1017171567. The cubic root of 66424158 is about 404.9878734366.

The spelling of 66424158 in words is "sixty-six million, four hundred twenty-four thousand, one hundred fifty-eight".