665676103 has 4 divisors (see below), whose sum is σ = 676588888. Its totient is φ = 654763320.

The previous prime is 665676091. The next prime is 665676169. The reversal of 665676103 is 301676566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 665676103 - 2⁵ = 665676071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665676203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5456301 + ... + 5456422.

It is an arithmetic number, because the mean of its divisors is an integer number (169147222).

Almost surely, 2^665676103 is an apocalyptic number.

665676103 is a deficient number, since it is larger than the sum of its proper divisors (10912785).

665676103 is a wasteful number, since it uses less digits than its factorization.

665676103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10912784.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 665676103 is about 25800.6996610557. The cubic root of 665676103 is about 873.1475817322.

The spelling of 665676103 in words is "six hundred sixty-five million, six hundred seventy-six thousand, one hundred three".