665522103 has 8 divisors (see below), whose sum is σ = 939560688. Its totient is φ = 417582464.

The previous prime is 665522083. The next prime is 665522107. The reversal of 665522103 is 301225566.

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

It is a cyclic number.

It is not a de Polignac number, because 665522103 - 2⁸ = 665521847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665522107) by changing a digit.

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, 6524676 + ... + 6524777.

It is an arithmetic number, because the mean of its divisors is an integer number (117445086).

Almost surely, 2^665522103 is an apocalyptic number.

665522103 is a deficient number, since it is larger than the sum of its proper divisors (274038585).

665522103 is a wasteful number, since it uses less digits than its factorization.

665522103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13049473.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 665522103 is about 25797.7150732386. The cubic root of 665522103 is about 873.0802441299.

Adding to 665522103 its reverse (301225566), we get a palindrome (966747669).

The spelling of 665522103 in words is "six hundred sixty-five million, five hundred twenty-two thousand, one hundred three".