662644 has 12 divisors (see below), whose sum is σ = 1220800. Its totient is φ = 313848.

The previous prime is 662639. The next prime is 662647. The reversal of 662644 is 446266.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662647) 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, 4284 + ... + 4435.

2⁶⁶²⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

662644 is a deficient number, since it is larger than the sum of its proper divisors (558156).

662644 is a wasteful number, since it uses less digits than its factorization.

662644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8742 (or 8740 counting only the distinct ones).

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

The square root of 662644 is about 814.0294834955. The cubic root of 662644 is about 87.1819857297.

It can be divided in two parts, 6626 and 44, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 662644 in words is "six hundred sixty-two thousand, six hundred forty-four".