68509410 has 32 divisors (see below), whose sum is σ = 171573120. Its totient is φ = 17474688.

The previous prime is 68509393. The next prime is 68509417. The reversal of 68509410 is 1490586.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68509417) 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 15 ways as a sum of consecutive naturals, for example, 48955 + ... + 50334.

It is an arithmetic number, because the mean of its divisors is an integer number (5361660).

Almost surely, 2^68509410 is an apocalyptic number.

68509410 is an abundant number, since it is smaller than the sum of its proper divisors (103063710).

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

68509410 is a wasteful number, since it uses less digits than its factorization.

68509410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99322.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 68509410 is about 8277.0411379913. The cubic root of 68509410 is about 409.1822088929.

Adding to 68509410 its reverse (1490586), we get a palindrome (69999996).

The spelling of 68509410 in words is "sixty-eight million, five hundred nine thousand, four hundred ten".