68129619 has 8 divisors (see below), whose sum is σ = 92328912. Its totient is φ = 44675040.

The previous prime is 68129603. The next prime is 68129623. The reversal of 68129619 is 91692186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68129619 - 2⁴ = 68129603 is a prime.

It is a super-2 number, since 2×68129619² = 9283289970170322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68129639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185964 + ... + 186329.

It is an arithmetic number, because the mean of its divisors is an integer number (11541114).

Almost surely, 2^68129619 is an apocalyptic number.

68129619 is a deficient number, since it is larger than the sum of its proper divisors (24199293).

68129619 is a wasteful number, since it uses less digits than its factorization.

68129619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372357.

The product of its digits is 46656, while the sum is 42.

The square root of 68129619 is about 8254.0668158187. The cubic root of 68129619 is about 408.4246887457.

The spelling of 68129619 in words is "sixty-eight million, one hundred twenty-nine thousand, six hundred nineteen".