664486 has 8 divisors (see below), whose sum is σ = 1018080. Its totient is φ = 325128.

The previous prime is 664471. The next prime is 664507. The reversal of 664486 is 684466.

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

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3441 + ... + 3628.

It is an arithmetic number, because the mean of its divisors is an integer number (127260).

2⁶⁶⁴⁴⁸⁶ is an apocalyptic number.

664486 is a deficient number, since it is larger than the sum of its proper divisors (353594).

664486 is a wasteful number, since it uses less digits than its factorization.

664486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7118.

The product of its digits is 27648, while the sum is 34.

The square root of 664486 is about 815.1601069729. The cubic root of 664486 is about 87.2626930409.

The spelling of 664486 in words is "six hundred sixty-four thousand, four hundred eighty-six".