66844110 has 16 divisors (see below), whose sum is σ = 160425936. Its totient is φ = 17825088.

The previous prime is 66844103. The next prime is 66844111. The reversal of 66844110 is 1144866.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2228137 = 66844110 / (6 + 6 + 8 + 4 + 4 + 1 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66844111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114039 + ... + 1114098.

It is an arithmetic number, because the mean of its divisors is an integer number (10026621).

Almost surely, 2^66844110 is an apocalyptic number.

66844110 is an abundant number, since it is smaller than the sum of its proper divisors (93581826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66844110 is a wasteful number, since it uses less digits than its factorization.

66844110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228147.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 66844110 is about 8175.8247290411. The cubic root of 66844110 is about 405.8395630663.

Adding to 66844110 its reverse (1144866), we get a palindrome (67988976).

The spelling of 66844110 in words is "sixty-six million, eight hundred forty-four thousand, one hundred ten".