68889843 has 24 divisors (see below), whose sum is σ = 112060416. Its totient is φ = 40402800.

The previous prime is 68889823. The next prime is 68889851. The reversal of 68889843 is 34898886.

It is not a de Polignac number, because 68889843 - 2¹³ = 68881651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68889843.

It is not an unprimeable number, because it can be changed into a prime (68889803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8155 + ... + 14292.

It is an arithmetic number, because the mean of its divisors is an integer number (4669184).

Almost surely, 2^68889843 is an apocalyptic number.

68889843 is a deficient number, since it is larger than the sum of its proper divisors (43170573).

68889843 is a wasteful number, since it uses less digits than its factorization.

68889843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22495 (or 22492 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 68889843 is about 8299.9905421633. The cubic root of 68889843 is about 409.9382080186.

The spelling of 68889843 in words is "sixty-eight million, eight hundred eighty-nine thousand, eight hundred forty-three".