68835729 has 8 divisors (see below), whose sum is σ = 91939680. Its totient is φ = 45811136.

The previous prime is 68835721. The next prime is 68835749. The reversal of 68835729 is 92753886.

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

It is a cyclic number.

It is not a de Polignac number, because 68835729 - 2³ = 68835721 is a prime.

It is a super-2 number, since 2×68835729² = 9476715173922882, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68835721) 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 7 ways as a sum of consecutive naturals, for example, 17784 + ... + 21305.

It is an arithmetic number, because the mean of its divisors is an integer number (11492460).

Almost surely, 2^68835729 is an apocalyptic number.

It is an amenable number.

68835729 is a deficient number, since it is larger than the sum of its proper divisors (23103951).

68835729 is a wasteful number, since it uses less digits than its factorization.

68835729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39679.

The product of its digits is 725760, while the sum is 48.

The square root of 68835729 is about 8296.7300185073. The cubic root of 68835729 is about 409.8308423741.

The spelling of 68835729 in words is "sixty-eight million, eight hundred thirty-five thousand, seven hundred twenty-nine".