68918850 has 480 divisors, whose sum is σ = 272232576. Its totient is φ = 12441600.

The previous prime is 68918771. The next prime is 68918851. The reversal of 68918850 is 5881986.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68918796 and 68918805.

It is not an unprimeable number, because it can be changed into a prime (68918851) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 4054042 + ... + 4054058.

Almost surely, 2^68918850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68918850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136116288).

68918850 is an abundant number, since it is smaller than the sum of its proper divisors (203313726).

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

68918850 is a wasteful number, since it uses less digits than its factorization.

68918850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 68918850 is about 8301.7377698889. The cubic root of 68918850 is about 409.9957366204.

The spelling of 68918850 in words is "sixty-eight million, nine hundred eighteen thousand, eight hundred fifty".