68083913 has 4 divisors (see below), whose sum is σ = 68100480. Its totient is φ = 68067348.

The previous prime is 68083891. The next prime is 68083919. The reversal of 68083913 is 31938086.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31938086 = 2 ⋅15969043.

It is a cyclic number.

It is not a de Polignac number, because 68083913 - 2⁶ = 68083849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68083919) 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, 3056 + ... + 12062.

It is an arithmetic number, because the mean of its divisors is an integer number (17025120).

Almost surely, 2^68083913 is an apocalyptic number.

It is an amenable number.

68083913 is a deficient number, since it is larger than the sum of its proper divisors (16567).

68083913 is an equidigital number, since it uses as much as digits as its factorization.

68083913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16566.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 68083913 is about 8251.2976555206. The cubic root of 68083913 is about 408.3333352585. Note that the first 5 decimals are identical.

The spelling of 68083913 in words is "sixty-eight million, eighty-three thousand, nine hundred thirteen".