66586148 has 6 divisors (see below), whose sum is σ = 116525766. Its totient is φ = 33293072.

The previous prime is 66586139. The next prime is 66586181. The reversal of 66586148 is 84168566.

It can be written as a sum of positive squares in only one way, i.e., 66455104 + 131044 = 8152^2 + 362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66586099 and 66586108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8323265 + ... + 8323272.

It is an arithmetic number, because the mean of its divisors is an integer number (19420961).

Almost surely, 2^66586148 is an apocalyptic number.

It is an amenable number.

66586148 is a deficient number, since it is larger than the sum of its proper divisors (49939618).

66586148 is a wasteful number, since it uses less digits than its factorization.

66586148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16646541 (or 16646539 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 66586148 is about 8160.0335783623. The cubic root of 66586148 is about 405.3168236749.

The spelling of 66586148 in words is "sixty-six million, five hundred eighty-six thousand, one hundred forty-eight".