663867080 has 64 divisors (see below), whose sum is σ = 1534982400. Its totient is φ = 258250240.

The previous prime is 663867073. The next prime is 663867089. The reversal of 663867080 is 80768366.

663867080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (663867089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 922961 + ... + 923679.

It is an arithmetic number, because the mean of its divisors is an integer number (23984100).

Almost surely, 2^663867080 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 663867080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767491200).

663867080 is an abundant number, since it is smaller than the sum of its proper divisors (871115320).

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

663867080 is a wasteful number, since it uses less digits than its factorization.

663867080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 663867080 is about 25765.6181761665. The cubic root of 663867080 is about 872.3559169088.

The spelling of 663867080 in words is "six hundred sixty-three million, eight hundred sixty-seven thousand, eighty".