663112733 has 4 divisors (see below), whose sum is σ = 675624348. Its totient is φ = 650601120.

The previous prime is 663112717. The next prime is 663112739. The reversal of 663112733 is 337211366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 499835449 + 163277284 = 22357^2 + 12778^2 .

It is a cyclic number.

It is not a de Polignac number, because 663112733 - 2⁴ = 663112717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 663112733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663112739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6255728 + ... + 6255833.

It is an arithmetic number, because the mean of its divisors is an integer number (168906087).

Almost surely, 2^663112733 is an apocalyptic number.

It is an amenable number.

663112733 is a deficient number, since it is larger than the sum of its proper divisors (12511615).

663112733 is a wasteful number, since it uses less digits than its factorization.

663112733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12511614.

The product of its digits is 13608, while the sum is 32.

The square root of 663112733 is about 25750.9753795851. The cubic root of 663112733 is about 872.0253745983.

The spelling of 663112733 in words is "six hundred sixty-three million, one hundred twelve thousand, seven hundred thirty-three".