68739843 has 8 divisors (see below), whose sum is σ = 93784768. Its totient is φ = 44760744.

The previous prime is 68739817. The next prime is 68739859. The reversal of 68739843 is 34893786.

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

It is not a de Polignac number, because 68739843 - 2¹⁰ = 68738819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68739792 and 68739801.

It is not an unprimeable number, because it can be changed into a prime (68739343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266305 + ... + 266562.

It is an arithmetic number, because the mean of its divisors is an integer number (11723096).

Almost surely, 2^68739843 is an apocalyptic number.

68739843 is a deficient number, since it is larger than the sum of its proper divisors (25044925).

68739843 is a wasteful number, since it uses less digits than its factorization.

68739843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532913.

The product of its digits is 870912, while the sum is 48.

The square root of 68739843 is about 8290.9494631194. The cubic root of 68739843 is about 409.6404601343.

The spelling of 68739843 in words is "sixty-eight million, seven hundred thirty-nine thousand, eight hundred forty-three".