66415102 has 16 divisors (see below), whose sum is σ = 107723952. Its totient is φ = 30528000.

The previous prime is 66415079. The next prime is 66415147. The reversal of 66415102 is 20151466.

It is a congruent 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, 1438 + ... + 11614.

It is an arithmetic number, because the mean of its divisors is an integer number (6732747).

Almost surely, 2^66415102 is an apocalyptic number.

66415102 is a deficient number, since it is larger than the sum of its proper divisors (41308850).

66415102 is a wasteful number, since it uses less digits than its factorization.

66415102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10443.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 66415102 is about 8149.5461223310. The cubic root of 66415102 is about 404.9694677994.

Adding to 66415102 its reverse (20151466), we get a palindrome (86566568).

The spelling of 66415102 in words is "sixty-six million, four hundred fifteen thousand, one hundred two".