663247206100 has 18 divisors (see below), whose sum is σ = 1439246437454. Its totient is φ = 265298882400.

The previous prime is 663247206023. The next prime is 663247206103. The reversal of 663247206100 is 1602742366.

It can be written as a sum of positive squares in 3 ways, for example, as 150654212164 + 512592993936 = 388142^2 + 715956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 663247206100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663247206103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3316235931 + ... + 3316236130.

Almost surely, 2^663247206100 is an apocalyptic number.

It is an amenable number.

663247206100 is an abundant number, since it is smaller than the sum of its proper divisors (775999231354).

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

663247206100 is a wasteful number, since it uses less digits than its factorization.

663247206100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632472075 (or 6632472068 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

Adding to 663247206100 its reverse (1602742366), we get a palindrome (664849948466).

The spelling of 663247206100 in words is "six hundred sixty-three billion, two hundred forty-seven million, two hundred six thousand, one hundred".