662632220 has 48 divisors (see below), whose sum is σ = 1479948960. Its totient is φ = 248500224.

The previous prime is 662632213. The next prime is 662632237. The reversal of 662632220 is 22236266.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27872 + ... + 45848.

It is an arithmetic number, because the mean of its divisors is an integer number (30832270).

Almost surely, 2^662632220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662632220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739974480).

662632220 is an abundant number, since it is smaller than the sum of its proper divisors (817316740).

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

662632220 is a wasteful number, since it uses less digits than its factorization.

662632220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18102 (or 18100 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 662632220 is about 25741.6436926627. The cubic root of 662632220 is about 871.8146910747.

Adding to 662632220 its reverse (22236266), we get a palindrome (684868486).

The spelling of 662632220 in words is "six hundred sixty-two million, six hundred thirty-two thousand, two hundred twenty".