662668220 has 24 divisors (see below), whose sum is σ = 1402566144. Its totient is φ = 262979136.

The previous prime is 662668219. The next prime is 662668243. The reversal of 662668220 is 22866266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127907 + ... + 132986.

It is an arithmetic number, because the mean of its divisors is an integer number (58440256).

Almost surely, 2^662668220 is an apocalyptic number.

It is an amenable number.

662668220 is an abundant number, since it is smaller than the sum of its proper divisors (739897924).

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

662668220 is a wasteful number, since it uses less digits than its factorization.

662668220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261029 (or 261027 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 662668220 is about 25742.3429392120. The cubic root of 662668220 is about 871.8304789983.

The spelling of 662668220 in words is "six hundred sixty-two million, six hundred sixty-eight thousand, two hundred twenty".