663454008 has 192 divisors, whose sum is σ = 2191488000. Its totient is φ = 177106176.

The previous prime is 663454007. The next prime is 663454037. The reversal of 663454008 is 800454366.

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 (663454007) 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 47 ways as a sum of consecutive naturals, for example, 756066 + ... + 756942.

It is an arithmetic number, because the mean of its divisors is an integer number (11414000).

Almost surely, 2^663454008 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 663454008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1095744000).

663454008 is an abundant number, since it is smaller than the sum of its proper divisors (1528033992).

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

663454008 is a wasteful number, since it uses less digits than its factorization.

663454008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 987 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 663454008 is about 25757.6009752461. The cubic root of 663454008 is about 872.1749466622.

The spelling of 663454008 in words is "six hundred sixty-three million, four hundred fifty-four thousand, eight".