663397007284 has 24 divisors (see below), whose sum is σ = 1278104335200. Its totient is φ = 298777632480.

The previous prime is 663397007281. The next prime is 663397007293. The reversal of 663397007284 is 482700793366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663397007281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69156694 + ... + 69166285.

It is an arithmetic number, because the mean of its divisors is an integer number (53254347300).

Almost surely, 2^663397007284 is an apocalyptic number.

It is an amenable number.

663397007284 is a deficient number, since it is larger than the sum of its proper divisors (614707327916).

663397007284 is a wasteful number, since it uses less digits than its factorization.

663397007284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138323103 (or 138323101 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 663397007284 in words is "six hundred sixty-three billion, three hundred ninety-seven million, seven thousand, two hundred eighty-four".