68116609 has 4 divisors (see below), whose sum is σ = 74309040. Its totient is φ = 61924180.

The previous prime is 68116597. The next prime is 68116613. The reversal of 68116609 is 90661186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68116609 - 2¹¹ = 68114561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68116649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3096199 + ... + 3096220.

It is an arithmetic number, because the mean of its divisors is an integer number (18577260).

Almost surely, 2^68116609 is an apocalyptic number.

It is an amenable number.

68116609 is a deficient number, since it is larger than the sum of its proper divisors (6192431).

68116609 is a wasteful number, since it uses less digits than its factorization.

68116609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192430.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 68116609 is about 8253.2786818331. The cubic root of 68116609 is about 408.3986895619.

The spelling of 68116609 in words is "sixty-eight million, one hundred sixteen thousand, six hundred nine".