66105102 has 16 divisors (see below), whose sum is σ = 151097472. Its totient is φ = 18887160.

The previous prime is 66105097. The next prime is 66105107. The reversal of 66105102 is 20150166.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66105097) and next prime (66105107).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66105107) 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, 786924 + ... + 787007.

It is an arithmetic number, because the mean of its divisors is an integer number (9443592).

Almost surely, 2^66105102 is an apocalyptic number.

66105102 is an abundant number, since it is smaller than the sum of its proper divisors (84992370).

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

66105102 is a wasteful number, since it uses less digits than its factorization.

66105102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573943.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 66105102 is about 8130.5044123966. The cubic root of 66105102 is about 404.3384046617.

Adding to 66105102 its reverse (20150166), we get a palindrome (86255268).

The spelling of 66105102 in words is "sixty-six million, one hundred five thousand, one hundred two".