68145500 has 48 divisors (see below), whose sum is σ = 150949344. Its totient is φ = 26870400.

The previous prime is 68145487. The next prime is 68145541. The reversal of 68145500 is 554186.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 35567 + ... + 37433.

It is an arithmetic number, because the mean of its divisors is an integer number (3144778).

Almost surely, 2^68145500 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 68145500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75474672).

68145500 is an abundant number, since it is smaller than the sum of its proper divisors (82803844).

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

68145500 is a wasteful number, since it uses less digits than its factorization.

68145500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 68145500 is about 8255.0287703920. The cubic root of 68145500 is about 408.4564208502.

Adding to 68145500 its reverse (554186), we get a palindrome (68699686).

The spelling of 68145500 in words is "sixty-eight million, one hundred forty-five thousand, five hundred".