663650364 has 48 divisors (see below), whose sum is σ = 1673118720. Its totient is φ = 203528640.

The previous prime is 663650363. The next prime is 663650381. The reversal of 663650364 is 463056366.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663650363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41677 + ... + 55355.

It is an arithmetic number, because the mean of its divisors is an integer number (34856640).

Almost surely, 2^663650364 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 663650364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (836559360).

663650364 is an abundant number, since it is smaller than the sum of its proper divisors (1009468356).

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

663650364 is a wasteful number, since it uses less digits than its factorization.

663650364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14010 (or 14008 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The square root of 663650364 is about 25761.4123060053. The cubic root of 663650364 is about 872.2609812075.

The spelling of 663650364 in words is "six hundred sixty-three million, six hundred fifty thousand, three hundred sixty-four".