68408550 has 240 divisors, whose sum is σ = 230461440. Its totient is φ = 14696640.

The previous prime is 68408513. The next prime is 68408551. The reversal of 68408550 is 5580486.

It is a happy number.

68408550 is a `hidden beast` number, since 68 + 40 + 8 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68408551) 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 119 ways as a sum of consecutive naturals, for example, 538587 + ... + 538713.

It is an arithmetic number, because the mean of its divisors is an integer number (960256).

Almost surely, 2^68408550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68408550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115230720).

68408550 is an abundant number, since it is smaller than the sum of its proper divisors (162052890).

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

68408550 is a wasteful number, since it uses less digits than its factorization.

68408550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 68408550 is about 8270.9461369302. The cubic root of 68408550 is about 408.9813100340.

The spelling of 68408550 in words is "sixty-eight million, four hundred eight thousand, five hundred fifty".