66424508 has 24 divisors (see below), whose sum is σ = 125948592. Its totient is φ = 30530304.

The previous prime is 66424507. The next prime is 66424511. The reversal of 66424508 is 80542466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66424507) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8435 + ... + 14282.

It is an arithmetic number, because the mean of its divisors is an integer number (5247858).

Almost surely, 2^66424508 is an apocalyptic number.

66424508 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66424508 is a deficient number, since it is larger than the sum of its proper divisors (59524084).

66424508 is a wasteful number, since it uses less digits than its factorization.

66424508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22781 (or 22779 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 66424508 is about 8150.1231892530. The cubic root of 66424508 is about 404.9885847517.

The spelling of 66424508 in words is "sixty-six million, four hundred twenty-four thousand, five hundred eight".