68343913 has 4 divisors (see below), whose sum is σ = 74557008. Its totient is φ = 62130820.

The previous prime is 68343911. The next prime is 68343929. The reversal of 68343913 is 31934386.

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 68343913 - 2¹ = 68343911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68343911) 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 3 ways as a sum of consecutive naturals, for example, 3106531 + ... + 3106552.

It is an arithmetic number, because the mean of its divisors is an integer number (18639252).

Almost surely, 2^68343913 is an apocalyptic number.

It is an amenable number.

68343913 is a deficient number, since it is larger than the sum of its proper divisors (6213095).

68343913 is a wasteful number, since it uses less digits than its factorization.

68343913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213094.

The product of its digits is 46656, while the sum is 37.

The square root of 68343913 is about 8267.0377403275. The cubic root of 68343913 is about 408.8524584247.

The spelling of 68343913 in words is "sixty-eight million, three hundred forty-three thousand, nine hundred thirteen".