68860139 has 8 divisors (see below), whose sum is σ = 70163520. Its totient is φ = 67561416.

The previous prime is 68860117. The next prime is 68860147. The reversal of 68860139 is 93106886.

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 68860139 - 2⁸ = 68859883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68860096 and 68860105.

It is not an unprimeable number, because it can be changed into a prime (68860109) 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, 45692 + ... + 47174.

It is an arithmetic number, because the mean of its divisors is an integer number (8770440).

Almost surely, 2^68860139 is an apocalyptic number.

68860139 is a deficient number, since it is larger than the sum of its proper divisors (1303381).

68860139 is a wasteful number, since it uses less digits than its factorization.

68860139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 68860139 is about 8298.2009496035. The cubic root of 68860139 is about 409.8792803424.

The spelling of 68860139 in words is "sixty-eight million, eight hundred sixty thousand, one hundred thirty-nine".