663011244 has 120 divisors (see below), whose sum is σ = 1990707488. Its totient is φ = 188490240.

The previous prime is 663011243. The next prime is 663011263. The reversal of 663011244 is 442110366.

663011244 is a `hidden beast` number, since 6 + 630 + 1 + 1 + 24 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (663011243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 545982 + ... + 547194.

Almost surely, 2^663011244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663011244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (995353744).

663011244 is an abundant number, since it is smaller than the sum of its proper divisors (1327696244).

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

663011244 is a wasteful number, since it uses less digits than its factorization.

663011244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 663011244 is about 25749.0047186294. The cubic root of 663011244 is about 871.9808846776.

The spelling of 663011244 in words is "six hundred sixty-three million, eleven thousand, two hundred forty-four".