1664014 has 16 divisors (see below), whose sum is σ = 2787840. Its totient is φ = 738360.

The previous prime is 1664009. The next prime is 1664017. The reversal of 1664014 is 4104661.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67 + ... + 1825.

It is an arithmetic number, because the mean of its divisors is an integer number (174240).

2^1664014 is an apocalyptic number.

1664014 is a deficient number, since it is larger than the sum of its proper divisors (1123826).

1664014 is a wasteful number, since it uses less digits than its factorization.

1664014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1664014 is about 1289.9666662360. The cubic root of 1664014 is about 118.5001750667.

Adding to 1664014 its reverse (4104661), we get a palindrome (5768675).

The spelling of 1664014 in words is "one million, six hundred sixty-four thousand, fourteen".