663063408 has 160 divisors (see below), whose sum is σ = 2202795520. Its totient is φ = 189376704.

The previous prime is 663063407. The next prime is 663063431. The reversal of 663063408 is 804360366.

663063408 is a `hidden beast` number, since 6 + 6 + 306 + 340 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663063407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243591 + ... + 246297.

It is an arithmetic number, because the mean of its divisors is an integer number (13767472).

Almost surely, 2^663063408 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 663063408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1101397760).

663063408 is an abundant number, since it is smaller than the sum of its proper divisors (1539732112).

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

663063408 is an equidigital number, since it uses as much as digits as its factorization.

663063408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2719 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 663063408 is about 25750.0176310619. The cubic root of 663063408 is about 872.0037524738.

The spelling of 663063408 in words is "six hundred sixty-three million, sixty-three thousand, four hundred eight".