664046 has 8 divisors (see below), whose sum is σ = 1012584. Its totient is φ = 326520.

The previous prime is 664043. The next prime is 664061. The reversal of 664046 is 640466.

664046 = T₁₁₆ + T₁₁₇ + ... + T₁₇₆.

664046 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664043) 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, 2600 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (126573).

2⁶⁶⁴⁰⁴⁶ is an apocalyptic number.

664046 is a deficient number, since it is larger than the sum of its proper divisors (348538).

664046 is a wasteful number, since it uses less digits than its factorization.

664046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 664046 is about 814.8901766496. The cubic root of 664046 is about 87.2434279935.

The spelling of 664046 in words is "six hundred sixty-four thousand, forty-six".