68513250 has 64 divisors (see below), whose sum is σ = 184189824. Its totient is φ = 16862400.

The previous prime is 68513209. The next prime is 68513257. The reversal of 68513250 is 5231586.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (68513257) 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 31 ways as a sum of consecutive naturals, for example, 6237 + ... + 13263.

It is an arithmetic number, because the mean of its divisors is an integer number (2877966).

Almost surely, 2^68513250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68513250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92094912).

68513250 is an abundant number, since it is smaller than the sum of its proper divisors (115676574).

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

68513250 is a wasteful number, since it uses less digits than its factorization.

68513250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060 (or 7050 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 68513250 is about 8277.2731016924. The cubic root of 68513250 is about 409.1898537324.

It can be divided in two parts, 6851 and 3250, that added together give a palindrome (10101).

The spelling of 68513250 in words is "sixty-eight million, five hundred thirteen thousand, two hundred fifty".