66562028 has 24 divisors (see below), whose sum is σ = 126229488. Its totient is φ = 30528576.

The previous prime is 66562019. The next prime is 66562043. The reversal of 66562028 is 82026566.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4550 + ... + 12402.

It is an arithmetic number, because the mean of its divisors is an integer number (5259562).

Almost surely, 2^66562028 is an apocalyptic number.

It is an amenable number.

66562028 is a deficient number, since it is larger than the sum of its proper divisors (59667460).

66562028 is a wasteful number, since it uses less digits than its factorization.

66562028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8033 (or 8031 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 66562028 is about 8158.5555094024. Note that the first 4 decimals coincide. The cubic root of 66562028 is about 405.2678774463.

The spelling of 66562028 in words is "sixty-six million, five hundred sixty-two thousand, twenty-eight".