663138846 has 32 divisors (see below), whose sum is σ = 1474636320. Its totient is φ = 220897152.

The previous prime is 663138841. The next prime is 663138859. The reversal of 663138846 is 648831366.

663138846 is a `hidden beast` number, since 6 + 631 + 3 + 8 + 8 + 4 + 6 = 666.

663138846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663138841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101206 + ... + 107558.

It is an arithmetic number, because the mean of its divisors is an integer number (46082385).

Almost surely, 2^663138846 is an apocalyptic number.

663138846 is an abundant number, since it is smaller than the sum of its proper divisors (811497474).

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

663138846 is a wasteful number, since it uses less digits than its factorization.

663138846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8297 (or 8291 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 663138846 is about 25751.4824039316. The cubic root of 663138846 is about 872.0368210681.

The spelling of 663138846 in words is "six hundred sixty-three million, one hundred thirty-eight thousand, eight hundred forty-six".