66104401 has 16 divisors (see below), whose sum is σ = 76320000. Its totient is φ = 56624400.

The previous prime is 66104393. The next prime is 66104429. The reversal of 66104401 is 10440166.

66104401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 66104401 - 2³ = 66104393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66104471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43350 + ... + 44848.

It is an arithmetic number, because the mean of its divisors is an integer number (4770000).

Almost surely, 2^66104401 is an apocalyptic number.

It is an amenable number.

66104401 is a deficient number, since it is larger than the sum of its proper divisors (10215599).

66104401 is a wasteful number, since it uses less digits than its factorization.

66104401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 66104401 is about 8130.4613030258. The cubic root of 66104401 is about 404.3369754113.

Adding to 66104401 its reverse (10440166), we get a palindrome (76544567).

It can be divided in two parts, 6610 and 4401, that added together give a palindrome (11011).

The spelling of 66104401 in words is "sixty-six million, one hundred four thousand, four hundred one".