660224532 has 24 divisors (see below), whose sum is σ = 1680571872. Its totient is φ = 200068000.

The previous prime is 660224503. The next prime is 660224603. The reversal of 660224532 is 235422066.

It is a self number, because there is not a number n which added to its sum of digits gives 660224532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500719 + ... + 2500982.

It is an arithmetic number, because the mean of its divisors is an integer number (70023828).

Almost surely, 2^660224532 is an apocalyptic number.

It is an amenable number.

660224532 is an abundant number, since it is smaller than the sum of its proper divisors (1020347340).

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

660224532 is a wasteful number, since it uses less digits than its factorization.

660224532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001719 (or 5001717 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 660224532 is about 25694.8347338526. The cubic root of 660224532 is about 870.7574906276.

Adding to 660224532 its reverse (235422066), we get a palindrome (895646598).

The spelling of 660224532 in words is "six hundred sixty million, two hundred twenty-four thousand, five hundred thirty-two".