664462 has 8 divisors (see below), whose sum is σ = 1055376. Its totient is φ = 312672.

The previous prime is 664459. The next prime is 664471. The reversal of 664462 is 264466.

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

It is a self number, because there is not a number n which added to its sum of digits gives 664462.

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, 9738 + ... + 9805.

It is an arithmetic number, because the mean of its divisors is an integer number (131922).

2⁶⁶⁴⁴⁶² is an apocalyptic number.

664462 is a deficient number, since it is larger than the sum of its proper divisors (390914).

664462 is a wasteful number, since it uses less digits than its factorization.

664462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19562.

The product of its digits is 6912, while the sum is 28.

The square root of 664462 is about 815.1453858055. The cubic root of 664462 is about 87.2616424395.

It can be divided in two parts, 66 and 4462, that multiplied together give a palindrome (294492).

The spelling of 664462 in words is "six hundred sixty-four thousand, four hundred sixty-two".