662405120 has 128 divisors (see below), whose sum is σ = 1717541280. Its totient is φ = 243793920.

The previous prime is 662405101. The next prime is 662405123. The reversal of 662405120 is 21504266.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 662405120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662405123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2129765 + ... + 2130075.

Almost surely, 2^662405120 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 662405120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (858770640).

662405120 is an abundant number, since it is smaller than the sum of its proper divisors (1055136160).

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

662405120 is an equidigital number, since it uses as much as digits as its factorization.

662405120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 662405120 is about 25737.2321744200. The cubic root of 662405120 is about 871.7150824063.

Adding to 662405120 its reverse (21504266), we get a palindrome (683909386).

The spelling of 662405120 in words is "six hundred sixty-two million, four hundred five thousand, one hundred twenty".