66010844 has 24 divisors (see below), whose sum is σ = 120052800. Its totient is φ = 31720640.

The previous prime is 66010843. The next prime is 66010859. The reversal of 66010844 is 44801066.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66010843) by changing a digit.

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, 26534 + ... + 28914.

It is an arithmetic number, because the mean of its divisors is an integer number (5002200).

Almost surely, 2^66010844 is an apocalyptic number.

It is an amenable number.

66010844 is a deficient number, since it is larger than the sum of its proper divisors (54041956).

66010844 is a wasteful number, since it uses less digits than its factorization.

66010844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653 (or 2651 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 66010844 is about 8124.7057792883. The cubic root of 66010844 is about 404.1461337829.

The spelling of 66010844 in words is "sixty-six million, ten thousand, eight hundred forty-four".