663461072 has 40 divisors (see below), whose sum is σ = 1335852000. Its totient is φ = 318829952.

The previous prime is 663461069. The next prime is 663461083. The reversal of 663461072 is 270164366.

663461072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102179 + ... + 108477.

It is an arithmetic number, because the mean of its divisors is an integer number (33396300).

Almost surely, 2^663461072 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 663461072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667926000).

663461072 is an abundant number, since it is smaller than the sum of its proper divisors (672390928).

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

663461072 is a wasteful number, since it uses less digits than its factorization.

663461072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563 (or 6557 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 663461072 is about 25757.7380994528. The cubic root of 663461072 is about 872.1780420901.

The spelling of 663461072 in words is "six hundred sixty-three million, four hundred sixty-one thousand, seventy-two".