68739861 has 8 divisors (see below), whose sum is σ = 91710720. Its totient is φ = 45797792.

The previous prime is 68739859. The next prime is 68739877. The reversal of 68739861 is 16893786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68739861 - 2¹ = 68739859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68739861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68739161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816 + ... + 11753.

It is an arithmetic number, because the mean of its divisors is an integer number (11463840).

Almost surely, 2^68739861 is an apocalyptic number.

It is an amenable number.

68739861 is a deficient number, since it is larger than the sum of its proper divisors (22970859).

68739861 is a wasteful number, since it uses less digits than its factorization.

68739861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14395.

The product of its digits is 435456, while the sum is 48.

The square root of 68739861 is about 8290.9505486404. The cubic root of 68739861 is about 409.6404958900.

The spelling of 68739861 in words is "sixty-eight million, seven hundred thirty-nine thousand, eight hundred sixty-one".