1664313 has 16 divisors (see below), whose sum is σ = 2599296. Its totient is φ = 927360.

The previous prime is 1664291. The next prime is 1664353. The reversal of 1664313 is 3134661.

It is not a de Polignac number, because 1664313 - 2¹⁰ = 1663289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1664353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106 + ... + 1827.

It is an arithmetic number, because the mean of its divisors is an integer number (162456).

2^1664313 is an apocalyptic number.

It is an amenable number.

1664313 is a deficient number, since it is larger than the sum of its proper divisors (934983).

1664313 is a wasteful number, since it uses less digits than its factorization.

1664313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984.

The product of its digits is 1296, while the sum is 24.

The square root of 1664313 is about 1290.0825554979. The cubic root of 1664313 is about 118.5072722486.

Adding to 1664313 its reverse (3134661), we get a palindrome (4798974).

The spelling of 1664313 in words is "one million, six hundred sixty-four thousand, three hundred thirteen".