66881126 has 24 divisors (see below), whose sum is σ = 111096720. Its totient is φ = 30017952.

The previous prime is 66881117. The next prime is 66881131. The reversal of 66881126 is 62118866.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66881126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34655 + ... + 36533.

It is an arithmetic number, because the mean of its divisors is an integer number (4629030).

Almost surely, 2^66881126 is an apocalyptic number.

66881126 is a deficient number, since it is larger than the sum of its proper divisors (44215594).

66881126 is a wasteful number, since it uses less digits than its factorization.

66881126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968 (or 1931 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 66881126 is about 8178.0881628899. The cubic root of 66881126 is about 405.9144626355.

The spelling of 66881126 in words is "sixty-six million, eight hundred eighty-one thousand, one hundred twenty-six".