664014 has 16 divisors (see below), whose sum is σ = 1430352. Its totient is φ = 204288.

The previous prime is 664009. The next prime is 664019. The reversal of 664014 is 410466.

It is an interprime number because it is at equal distance from previous prime (664009) and next prime (664019).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 664014.

It is not an unprimeable number, because it can be changed into a prime (664019) by changing a digit.

664014 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4179 + ... + 4334.

It is an arithmetic number, because the mean of its divisors is an integer number (89397).

2⁶⁶⁴⁰¹⁴ is an apocalyptic number.

664014 is an abundant number, since it is smaller than the sum of its proper divisors (766338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664014 is a wasteful number, since it uses less digits than its factorization.

664014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8531.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 664014 is about 814.8705418654. The cubic root of 664014 is about 87.2420265673.

The spelling of 664014 in words is "six hundred sixty-four thousand, fourteen".