663169240 has 16 divisors (see below), whose sum is σ = 1492130880. Its totient is φ = 265267680.

The previous prime is 663169237. The next prime is 663169259. The reversal of 663169240 is 42961366.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 663169240.

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, 8289576 + ... + 8289655.

It is an arithmetic number, because the mean of its divisors is an integer number (93258180).

Almost surely, 2^663169240 is an apocalyptic number.

It is an amenable number.

663169240 is an abundant number, since it is smaller than the sum of its proper divisors (828961640).

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

663169240 is a wasteful number, since it uses less digits than its factorization.

663169240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16579242 (or 16579238 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 663169240 is about 25752.0725379531. The cubic root of 663169240 is about 872.0501437091.

The spelling of 663169240 in words is "six hundred sixty-three million, one hundred sixty-nine thousand, two hundred forty".