68410509 has 16 divisors (see below), whose sum is σ = 94578624. Its totient is φ = 43952000.

The previous prime is 68410477. The next prime is 68410523. The reversal of 68410509 is 90501486.

It is not a de Polignac number, because 68410509 - 2⁵ = 68410477 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68410509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68410409) 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, 6859 + ... + 13559.

It is an arithmetic number, because the mean of its divisors is an integer number (5911164).

Almost surely, 2^68410509 is an apocalyptic number.

It is an amenable number.

68410509 is a deficient number, since it is larger than the sum of its proper divisors (26168115).

68410509 is a wasteful number, since it uses less digits than its factorization.

68410509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6828.

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

The square root of 68410509 is about 8271.0645626787. The cubic root of 68410509 is about 408.9852139648.

The spelling of 68410509 in words is "sixty-eight million, four hundred ten thousand, five hundred nine".