68105500 has 96 divisors (see below), whose sum is σ = 160392960. Its totient is φ = 25185600.

The previous prime is 68105497. The next prime is 68105503. The reversal of 68105500 is 550186.

It is an interprime number because it is at equal distance from previous prime (68105497) and next prime (68105503).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68105503) 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, 636447 + ... + 636553.

It is an arithmetic number, because the mean of its divisors is an integer number (1670760).

Almost surely, 2^68105500 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 68105500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80196480).

68105500 is an abundant number, since it is smaller than the sum of its proper divisors (92287460).

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

68105500 is a wasteful number, since it uses less digits than its factorization.

68105500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 68105500 is about 8252.6056491268. The cubic root of 68105500 is about 408.3764867161.

Adding to 68105500 its reverse (550186), we get a palindrome (68655686).

The spelling of 68105500 in words is "sixty-eight million, one hundred five thousand, five hundred".