660363424 has 96 divisors (see below), whose sum is σ = 1517322240. Its totient is φ = 277095168.

The previous prime is 660363421. The next prime is 660363439. The reversal of 660363424 is 424363066.

It is a self number, because there is not a number n which added to its sum of digits gives 660363424.

It is not an unprimeable number, because it can be changed into a prime (660363421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3954189 + ... + 3954355.

It is an arithmetic number, because the mean of its divisors is an integer number (15805440).

Almost surely, 2^660363424 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 660363424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (758661120).

660363424 is an abundant number, since it is smaller than the sum of its proper divisors (856958816).

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

660363424 is a wasteful number, since it uses less digits than its factorization.

660363424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 660363424 is about 25697.5373139140. The cubic root of 660363424 is about 870.8185470126.

The spelling of 660363424 in words is "six hundred sixty million, three hundred sixty-three thousand, four hundred twenty-four".