66560854 has 16 divisors (see below), whose sum is σ = 103784688. Its totient is φ = 31987872.

The previous prime is 66560849. The next prime is 66560863. The reversal of 66560854 is 45806566.

It is a congruent number.

It is an unprimeable number.

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, 724 + ... + 11560.

It is an arithmetic number, because the mean of its divisors is an integer number (6486543).

Almost surely, 2^66560854 is an apocalyptic number.

66560854 is a deficient number, since it is larger than the sum of its proper divisors (37223834).

66560854 is a wasteful number, since it uses less digits than its factorization.

66560854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10959.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 66560854 is about 8158.4835600741. The cubic root of 66560854 is about 405.2654947701.

The spelling of 66560854 in words is "sixty-six million, five hundred sixty thousand, eight hundred fifty-four".