66604102 has 8 divisors (see below), whose sum is σ = 99946512. Its totient is φ = 33288600.

The previous prime is 66604081. The next prime is 66604103. The reversal of 66604102 is 20140666.

It is a happy number.

66604102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66604102² = 8872212806452808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66604103) 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 3 ways as a sum of consecutive naturals, for example, 1452 + ... + 11632.

It is an arithmetic number, because the mean of its divisors is an integer number (12493314).

Almost surely, 2^66604102 is an apocalyptic number.

66604102 is a deficient number, since it is larger than the sum of its proper divisors (33342410).

66604102 is a wasteful number, since it uses less digits than its factorization.

66604102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13454.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 66604102 is about 8161.1336222366. The cubic root of 66604102 is about 405.3532496911.

Adding to 66604102 its reverse (20140666), we get a palindrome (86744768).

The spelling of 66604102 in words is "sixty-six million, six hundred four thousand, one hundred two".