660210432 has 144 divisors (see below), whose sum is σ = 2020714752. Its totient is φ = 187453440.

The previous prime is 660210401. The next prime is 660210443. The reversal of 660210432 is 234012066.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1220082 + ... + 1220622.

Almost surely, 2^660210432 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 660210432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010357376).

660210432 is an abundant number, since it is smaller than the sum of its proper divisors (1360504320).

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

660210432 is a wasteful number, since it uses less digits than its factorization.

660210432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 660210432 is about 25694.5603581770. The cubic root of 660210432 is about 870.7512918435.

Adding to 660210432 its reverse (234012066), we get a palindrome (894222498).

The spelling of 660210432 in words is "six hundred sixty million, two hundred ten thousand, four hundred thirty-two".