68943861 has 24 divisors (see below), whose sum is σ = 114645440. Its totient is φ = 39108096.

The previous prime is 68943851. The next prime is 68943883. The reversal of 68943861 is 16834986.

It is not a de Polignac number, because 68943861 - 2⁵ = 68943829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68943821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4821 + ... + 12693.

Almost surely, 2^68943861 is an apocalyptic number.

It is an amenable number.

68943861 is a deficient number, since it is larger than the sum of its proper divisors (45701579).

68943861 is a wasteful number, since it uses less digits than its factorization.

68943861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8025 (or 8022 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 68943861 is about 8303.2440046045. The cubic root of 68943861 is about 410.0453271323.

The spelling of 68943861 in words is "sixty-eight million, nine hundred forty-three thousand, eight hundred sixty-one".