68217843 has 16 divisors (see below), whose sum is σ = 93393920. Its totient is φ = 44276544.

The previous prime is 68217841. The next prime is 68217871. The reversal of 68217843 is 34871286.

It is not a de Polignac number, because 68217843 - 2¹ = 68217841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68217841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15330 + ... + 19272.

It is an arithmetic number, because the mean of its divisors is an integer number (5837120).

Almost surely, 2^68217843 is an apocalyptic number.

68217843 is a deficient number, since it is larger than the sum of its proper divisors (25176077).

68217843 is a wasteful number, since it uses less digits than its factorization.

68217843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098.

The product of its digits is 64512, while the sum is 39.

The square root of 68217843 is about 8259.4093614495. The cubic root of 68217843 is about 408.6009083203.

The spelling of 68217843 in words is "sixty-eight million, two hundred seventeen thousand, eight hundred forty-three".