663343424 has 28 divisors (see below), whose sum is σ = 1329904884. Its totient is φ = 328249344.

The previous prime is 663343411. The next prime is 663343441. The reversal of 663343424 is 424343366.

It can be written as a sum of positive squares in 2 ways, for example, as 144961600 + 518381824 = 12040^2 + 22768^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47219 + ... + 59634.

It is an arithmetic number, because the mean of its divisors is an integer number (47496603).

Almost surely, 2^663343424 is an apocalyptic number.

663343424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

663343424 is an abundant number, since it is smaller than the sum of its proper divisors (666561460).

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

663343424 is a wasteful number, since it uses less digits than its factorization.

663343424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106962 (or 106952 counting only the distinct ones).

The product of its digits is 124416, while the sum is 35.

The square root of 663343424 is about 25755.4542573025. The cubic root of 663343424 is about 872.1264861549.

The spelling of 663343424 in words is "six hundred sixty-three million, three hundred forty-three thousand, four hundred twenty-four".