68419913 has 4 divisors (see below), whose sum is σ = 69084288. Its totient is φ = 67755540.

The previous prime is 68419889. The next prime is 68419987. The reversal of 68419913 is 31991486.

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 an emirpimes, since its reverse is a distinct semiprime: 31991486 = 2 ⋅15995743.

It is a cyclic number.

It is not a de Polignac number, because 68419913 - 2²⁴ = 51642697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68419213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332033 + ... + 332238.

It is an arithmetic number, because the mean of its divisors is an integer number (17271072).

Almost surely, 2^68419913 is an apocalyptic number.

It is an amenable number.

68419913 is a deficient number, since it is larger than the sum of its proper divisors (664375).

68419913 is a wasteful number, since it uses less digits than its factorization.

68419913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664374.

The product of its digits is 46656, while the sum is 41.

The square root of 68419913 is about 8271.6330310284. The cubic root of 68419913 is about 409.0039533895.

The spelling of 68419913 in words is "sixty-eight million, four hundred nineteen thousand, nine hundred thirteen".