68287943 has 4 divisors (see below), whose sum is σ = 71257008. Its totient is φ = 65318880.

The previous prime is 68287939. The next prime is 68287951. The reversal of 68287943 is 34978286.

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 68287943 - 2² = 68287939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68287993) 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, 1484498 + ... + 1484543.

It is an arithmetic number, because the mean of its divisors is an integer number (17814252).

Almost surely, 2^68287943 is an apocalyptic number.

68287943 is a deficient number, since it is larger than the sum of its proper divisors (2969065).

68287943 is a wasteful number, since it uses less digits than its factorization.

68287943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969064.

The product of its digits is 580608, while the sum is 47.

The square root of 68287943 is about 8263.6519166770. The cubic root of 68287943 is about 408.7408185302.

The spelling of 68287943 in words is "sixty-eight million, two hundred eighty-seven thousand, nine hundred forty-three".