68343909 has 8 divisors (see below), whose sum is σ = 91163520. Its totient is φ = 45543456.

The previous prime is 68343853. The next prime is 68343911. The reversal of 68343909 is 90934386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68343909 - 2²¹ = 66246757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68343929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10644 + ... + 15810.

It is an arithmetic number, because the mean of its divisors is an integer number (11395440).

Almost surely, 2^68343909 is an apocalyptic number.

It is an amenable number.

68343909 is a deficient number, since it is larger than the sum of its proper divisors (22819611).

68343909 is a wasteful number, since it uses less digits than its factorization.

68343909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9579.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 68343909 is about 8267.0374984029. The cubic root of 68343909 is about 408.8524504484.

The spelling of 68343909 in words is "sixty-eight million, three hundred forty-three thousand, nine hundred nine".