66068428 has 12 divisors (see below), whose sum is σ = 116226432. Its totient is φ = 32860880.

The previous prime is 66068407. The next prime is 66068447. The reversal of 66068428 is 82486066.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42475 + ... + 44002.

It is an arithmetic number, because the mean of its divisors is an integer number (9685536).

Almost surely, 2^66068428 is an apocalyptic number.

It is an amenable number.

66068428 is a deficient number, since it is larger than the sum of its proper divisors (50158004).

66068428 is a wasteful number, since it uses less digits than its factorization.

66068428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86672 (or 86670 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 66068428 is about 8128.2487658782. The cubic root of 66068428 is about 404.2636174451.

The spelling of 66068428 in words is "sixty-six million, sixty-eight thousand, four hundred twenty-eight".