663740924 has 24 divisors (see below), whose sum is σ = 1448162688. Its totient is φ = 258600240.

The previous prime is 663740921. The next prime is 663740929. The reversal of 663740924 is 429047366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663740921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077194 + ... + 1077809.

It is an arithmetic number, because the mean of its divisors is an integer number (60340112).

Almost surely, 2^663740924 is an apocalyptic number.

It is an amenable number.

663740924 is an abundant number, since it is smaller than the sum of its proper divisors (784421764).

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

663740924 is a wasteful number, since it uses less digits than its factorization.

663740924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155025 (or 2155023 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 663740924 is about 25763.1699136578. The cubic root of 663740924 is about 872.3006548901.

The spelling of 663740924 in words is "six hundred sixty-three million, seven hundred forty thousand, nine hundred twenty-four".