68917929 has 8 divisors (see below), whose sum is σ = 94854912. Its totient is φ = 44463120.

The previous prime is 68917907. The next prime is 68917931. The reversal of 68917929 is 92971986.

It is a happy number.

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

It is not a de Polignac number, because 68917929 - 2⁵ = 68917897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68917999) 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, 370434 + ... + 370619.

It is an arithmetic number, because the mean of its divisors is an integer number (11856864).

Almost surely, 2^68917929 is an apocalyptic number.

It is an amenable number.

68917929 is a deficient number, since it is larger than the sum of its proper divisors (25936983).

68917929 is a wasteful number, since it uses less digits than its factorization.

68917929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741087.

The product of its digits is 489888, while the sum is 51.

The square root of 68917929 is about 8301.6822993897. The cubic root of 68917929 is about 409.9939102804.

The spelling of 68917929 in words is "sixty-eight million, nine hundred seventeen thousand, nine hundred twenty-nine".