68835739 has 6 divisors (see below), whose sum is σ = 80074284. Its totient is φ = 59002020.

The previous prime is 68835721. The next prime is 68835749. The reversal of 68835739 is 93753886.

It is a de Polignac number, because none of the positive numbers 2^k-68835739 is a prime.

It is a super-2 number, since 2×68835739² = 9476717927352242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1404811 = 68835739 / (6 + 8 + 8 + 3 + 5 + 7 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68835692 and 68835701.

It is not an unprimeable number, because it can be changed into a prime (68835749) 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 5 ways as a sum of consecutive naturals, for example, 702357 + ... + 702454.

It is an arithmetic number, because the mean of its divisors is an integer number (13345714).

Almost surely, 2^68835739 is an apocalyptic number.

68835739 is a deficient number, since it is larger than the sum of its proper divisors (11238545).

68835739 is a wasteful number, since it uses less digits than its factorization.

68835739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404825 (or 1404818 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 68835739 is about 8296.7306211543. The cubic root of 68835739 is about 409.8308622199.

The spelling of 68835739 in words is "sixty-eight million, eight hundred thirty-five thousand, seven hundred thirty-nine".