662311220 has 48 divisors (see below), whose sum is σ = 1453915008. Its totient is φ = 252954240.

The previous prime is 662311201. The next prime is 662311229. The reversal of 662311220 is 22113266.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662311229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379550 + ... + 381290.

It is an arithmetic number, because the mean of its divisors is an integer number (30289896).

Almost surely, 2^662311220 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 662311220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726957504).

662311220 is an abundant number, since it is smaller than the sum of its proper divisors (791603788).

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

662311220 is a wasteful number, since it uses less digits than its factorization.

662311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600 (or 2598 counting only the distinct ones).

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

The square root of 662311220 is about 25735.4079042863. The cubic root of 662311220 is about 871.6738901350.

Adding to 662311220 its reverse (22113266), we get a palindrome (684424486).

The spelling of 662311220 in words is "six hundred sixty-two million, three hundred eleven thousand, two hundred twenty".