66844010 has 16 divisors (see below), whose sum is σ = 120418272. Its totient is φ = 26715600.

The previous prime is 66844007. The next prime is 66844021. The reversal of 66844010 is 1044866.

It is a Curzon number.

It is an unprimeable number.

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, 16265 + ... + 19955.

It is an arithmetic number, because the mean of its divisors is an integer number (7526142).

Almost surely, 2^66844010 is an apocalyptic number.

66844010 is a deficient number, since it is larger than the sum of its proper divisors (53574262).

66844010 is a wasteful number, since it uses less digits than its factorization.

66844010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5509.

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

The square root of 66844010 is about 8175.8186134478. The cubic root of 66844010 is about 405.8393606851.

Adding to 66844010 its reverse (1044866), we get a palindrome (67888876).

The spelling of 66844010 in words is "sixty-six million, eight hundred forty-four thousand, ten".