68355113 has 4 divisors (see below), whose sum is σ = 72376020. Its totient is φ = 64334208.

The previous prime is 68355109. The next prime is 68355139. The reversal of 68355113 is 31155386.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57805609 + 10549504 = 7603^2 + 3248^2 .

It is a cyclic number.

It is not a de Polignac number, because 68355113 - 2² = 68355109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68355113.

It is not an unprimeable number, because it can be changed into a prime (68355163) 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, 2010428 + ... + 2010461.

It is an arithmetic number, because the mean of its divisors is an integer number (18094005).

Almost surely, 2^68355113 is an apocalyptic number.

It is an amenable number.

68355113 is a deficient number, since it is larger than the sum of its proper divisors (4020907).

68355113 is a wasteful number, since it uses less digits than its factorization.

68355113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020906.

The product of its digits is 10800, while the sum is 32.

The square root of 68355113 is about 8267.7151015259. The cubic root of 68355113 is about 408.8747910521.

The spelling of 68355113 in words is "sixty-eight million, three hundred fifty-five thousand, one hundred thirteen".