68187839 has 8 divisors (see below), whose sum is σ = 69727392. Its totient is φ = 66657760.

The previous prime is 68187773. The next prime is 68187841. The reversal of 68187839 is 93878186.

It is a happy number.

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 68187839 - 2⁸ = 68187583 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 (68187859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13334 + ... + 17724.

It is an arithmetic number, because the mean of its divisors is an integer number (8715924).

Almost surely, 2^68187839 is an apocalyptic number.

68187839 is a deficient number, since it is larger than the sum of its proper divisors (1539553).

68187839 is a wasteful number, since it uses less digits than its factorization.

68187839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737.

The product of its digits is 580608, while the sum is 50.

The square root of 68187839 is about 8257.5928090455. The cubic root of 68187839 is about 408.5409950633.

The spelling of 68187839 in words is "sixty-eight million, one hundred eighty-seven thousand, eight hundred thirty-nine".