66424554 has 24 divisors (see below), whose sum is σ = 164480160. Its totient is φ = 18978408.

The previous prime is 66424541. The next prime is 66424571. The reversal of 66424554 is 45542466.

66424554 is a `hidden beast` number, since 6 + 642 + 4 + 5 + 5 + 4 = 666.

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 11 ways as a sum of consecutive naturals, for example, 263464 + ... + 263715.

It is an arithmetic number, because the mean of its divisors is an integer number (6853340).

Almost surely, 2^66424554 is an apocalyptic number.

66424554 is an abundant number, since it is smaller than the sum of its proper divisors (98055606).

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

66424554 is a wasteful number, since it uses less digits than its factorization.

66424554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527194 (or 527191 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 66424554 is about 8150.1260112958. The cubic root of 66424554 is about 404.9886782386.

The spelling of 66424554 in words is "sixty-six million, four hundred twenty-four thousand, five hundred fifty-four".