662405520 has 480 divisors, whose sum is σ = 2605547520. Its totient is φ = 138378240.

The previous prime is 662405507. The next prime is 662405521. The reversal of 662405520 is 25504266.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (662405521) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8384841 + ... + 8384919.

It is an arithmetic number, because the mean of its divisors is an integer number (5428224).

Almost surely, 2^662405520 is an apocalyptic number.

662405520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 662405520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302773760).

662405520 is an abundant number, since it is smaller than the sum of its proper divisors (1943142000).

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

662405520 is a wasteful number, since it uses less digits than its factorization.

662405520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 662405520 is about 25737.2399452622. The cubic root of 662405520 is about 871.7152578709.

Adding to 662405520 its reverse (25504266), we get a palindrome (687909786).

The spelling of 662405520 in words is "six hundred sixty-two million, four hundred five thousand, five hundred twenty".