664131103 has 4 divisors (see below), whose sum is σ = 678261600. Its totient is φ = 650000608.

The previous prime is 664131101. The next prime is 664131109. The reversal of 664131103 is 301131466.

It is a happy number.

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 664131103 - 2¹ = 664131101 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 (664131101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7065178 + ... + 7065271.

It is an arithmetic number, because the mean of its divisors is an integer number (169565400).

Almost surely, 2^664131103 is an apocalyptic number.

664131103 is a deficient number, since it is larger than the sum of its proper divisors (14130497).

664131103 is a wasteful number, since it uses less digits than its factorization.

664131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14130496.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 664131103 is about 25770.7412194527. The cubic root of 664131103 is about 872.4715482385.

Adding to 664131103 its reverse (301131466), we get a palindrome (965262569).

The spelling of 664131103 in words is "six hundred sixty-four million, one hundred thirty-one thousand, one hundred three".