108663408 has 240 divisors, whose sum is σ = 374499840. Its totient is φ = 28740096.

The previous prime is 108663403. The next prime is 108663419. The reversal of 108663408 is 804366801.

It is a happy number.

108663408 is a `hidden beast` number, since 10 + 8 + 6 + 634 + 0 + 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 (108663403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 996858 + ... + 996966.

It is an arithmetic number, because the mean of its divisors is an integer number (1560416).

Almost surely, 2^108663408 is an apocalyptic number.

108663408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108663408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187249920).

108663408 is an abundant number, since it is smaller than the sum of its proper divisors (265836432).

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

108663408 is a wasteful number, since it uses less digits than its factorization.

108663408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 108663408 is about 10424.1742118980. The cubic root of 108663408 is about 477.1934133830.

The spelling of 108663408 in words is "one hundred eight million, six hundred sixty-three thousand, four hundred eight".