1664104003 has 4 divisors (see below), whose sum is σ = 1665688408. Its totient is φ = 1662519600.

The previous prime is 1664103997. The next prime is 1664104009. The reversal of 1664104003 is 3004014661.

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

It is an interprime number because it is at equal distance from previous prime (1664103997) and next prime (1664104009).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1664104003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1664104009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790626 + ... + 792727.

It is an arithmetic number, because the mean of its divisors is an integer number (416422102).

Almost surely, 2^1664104003 is an apocalyptic number.

1664104003 is a deficient number, since it is larger than the sum of its proper divisors (1584405).

1664104003 is a wasteful number, since it uses less digits than its factorization.

1664104003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584404.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1664104003 is about 40793.4308804739. The cubic root of 1664104003 is about 1185.0231150280.

Adding to 1664104003 its reverse (3004014661), we get a palindrome (4668118664).

The spelling of 1664104003 in words is "one billion, six hundred sixty-four million, one hundred four thousand, three".