663631124 has 12 divisors (see below), whose sum is σ = 1250689524. Its totient is φ = 306291264.

The previous prime is 663631123. The next prime is 663631127. The reversal of 663631124 is 421136366.

It can be written as a sum of positive squares in 2 ways, for example, as 271195024 + 392436100 = 16468^2 + 19810^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663631123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6381017 + ... + 6381120.

It is an arithmetic number, because the mean of its divisors is an integer number (104224127).

Almost surely, 2^663631124 is an apocalyptic number.

It is an amenable number.

663631124 is a deficient number, since it is larger than the sum of its proper divisors (587058400).

663631124 is a wasteful number, since it uses less digits than its factorization.

663631124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12762154 (or 12762152 counting only the distinct ones).

The product of its digits is 15552, while the sum is 32.

The square root of 663631124 is about 25761.0388765671. The cubic root of 663631124 is about 872.2525518374.

The spelling of 663631124 in words is "six hundred sixty-three million, six hundred thirty-one thousand, one hundred twenty-four".