663906849062832 has 120 divisors (see below), whose sum is σ = 1861250789000928. Its totient is φ = 220917236198400.

The previous prime is 663906849062783. The next prime is 663906849062861. The reversal of 663906849062832 is 238260948609366.

663906849062832 is a `hidden beast` number, since 6 + 6 + 390 + 68 + 4 + 90 + 62 + 8 + 32 = 666.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 587598282 + ... + 588727062.

Almost surely, 2^{663906849062832} is an apocalyptic number.

It is an amenable number.

663906849062832 is an abundant number, since it is smaller than the sum of its proper divisors (1197343939938096).

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

663906849062832 is a wasteful number, since it uses less digits than its factorization.

663906849062832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135899 (or 1135890 counting only the distinct ones).

The product of its (nonzero) digits is 967458816, while the sum is 72.

The spelling of 663906849062832 in words is "six hundred sixty-three trillion, nine hundred six billion, eight hundred forty-nine million, sixty-two thousand, eight hundred thirty-two".