664514 has 8 divisors (see below), whose sum is σ = 1015740. Its totient is φ = 325936.

The previous prime is 664511. The next prime is 664529. The reversal of 664514 is 415466.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 664225 + 289 = 815^2 + 17^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 664514.

It is not an unprimeable number, because it can be changed into a prime (664511) 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, 3029 + ... + 3240.

2⁶⁶⁴⁵¹⁴ is an apocalyptic number.

664514 is a deficient number, since it is larger than the sum of its proper divisors (351226).

664514 is a wasteful number, since it uses less digits than its factorization.

664514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324.

The product of its digits is 2880, while the sum is 26.

The square root of 664514 is about 815.1772813321. The cubic root of 664514 is about 87.2639187106.

The spelling of 664514 in words is "six hundred sixty-four thousand, five hundred fourteen".