68359919 has 2 divisors, whose sum is σ = 68359920. Its totient is φ = 68359918.

The previous prime is 68359913. The next prime is 68359943. The reversal of 68359919 is 91995386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68359919 - 2¹² = 68355823 is a prime.

It is a super-2 number, since 2×68359919² = 9346157051373122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68359913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34179959 + 34179960.

It is an arithmetic number, because the mean of its divisors is an integer number (34179960).

Almost surely, 2^68359919 is an apocalyptic number.

68359919 is a deficient number, since it is larger than the sum of its proper divisors (1).

68359919 is an equidigital number, since it uses as much as digits as its factorization.

68359919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 50.

The square root of 68359919 is about 8268.0057450391. The cubic root of 68359919 is about 408.8843733940.

The spelling of 68359919 in words is "sixty-eight million, three hundred fifty-nine thousand, nine hundred nineteen".