662216 has 32 divisors (see below), whose sum is σ = 1339200. Its totient is φ = 306240.

The previous prime is 662203. The next prime is 662227. The reversal of 662216 is 612266.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 662191 and 662200.

It is an unprimeable number.

662216 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 7 ways as a sum of consecutive naturals, for example, 10826 + ... + 10886.

It is an arithmetic number, because the mean of its divisors is an integer number (41850).

2⁶⁶²²¹⁶ is an apocalyptic number.

It is an amenable number.

662216 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.

662216 is a wasteful number, since it uses less digits than its factorization.

662216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 145 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 662216 is about 813.7665512910. The cubic root of 662216 is about 87.1632114827.

It can be divided in two parts, 662 and 216, that added together give a palindrome (878).

The spelling of 662216 in words is "six hundred sixty-two thousand, two hundred sixteen".