68815043 has 4 divisors (see below), whose sum is σ = 75070968. Its totient is φ = 62559120.

The previous prime is 68815039. The next prime is 68815049. The reversal of 68815043 is 34051886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68815043 - 2² = 68815039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68814994 and 68815012.

It is not an unprimeable number, because it can be changed into a prime (68815049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3127946 + ... + 3127967.

It is an arithmetic number, because the mean of its divisors is an integer number (18767742).

Almost surely, 2^68815043 is an apocalyptic number.

68815043 is a deficient number, since it is larger than the sum of its proper divisors (6255925).

68815043 is a wasteful number, since it uses less digits than its factorization.

68815043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255924.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 68815043 is about 8295.4832891158. The cubic root of 68815043 is about 409.7897851581.

The spelling of 68815043 in words is "sixty-eight million, eight hundred fifteen thousand, forty-three".