662646 has 8 divisors (see below), whose sum is σ = 1325304. Its totient is φ = 220880.

The previous prime is 662639. The next prime is 662647. The reversal of 662646 is 646266.

662646 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.

662646 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662647) by changing a digit.

662646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55215 + ... + 55226.

It is an arithmetic number, because the mean of its divisors is an integer number (165663).

2⁶⁶²⁶⁴⁶ is an apocalyptic number.

662646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662646 is a wasteful number, since it uses less digits than its factorization.

662646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110446.

The product of its digits is 10368, while the sum is 30.

The square root of 662646 is about 814.0307119513. The cubic root of 662646 is about 87.1820734409.

The spelling of 662646 in words is "six hundred sixty-two thousand, six hundred forty-six".