68387141 has 4 divisors (see below), whose sum is σ = 72409932. Its totient is φ = 64364352.

The previous prime is 68387093. The next prime is 68387173. The reversal of 68387141 is 14178386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14178386 = 2 ⋅7089193.

It can be written as a sum of positive squares in 2 ways, for example, as 57304900 + 11082241 = 7570^2 + 3329^2 .

It is a cyclic number.

It is not a de Polignac number, because 68387141 - 2²² = 64192837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68387095 and 68387104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68387941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2011370 + ... + 2011403.

It is an arithmetic number, because the mean of its divisors is an integer number (18102483).

Almost surely, 2^68387141 is an apocalyptic number.

It is an amenable number.

68387141 is a deficient number, since it is larger than the sum of its proper divisors (4022791).

68387141 is a wasteful number, since it uses less digits than its factorization.

68387141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022790.

The product of its digits is 32256, while the sum is 38.

The square root of 68387141 is about 8269.6518064547. The cubic root of 68387141 is about 408.9386409308.

The spelling of 68387141 in words is "sixty-eight million, three hundred eighty-seven thousand, one hundred forty-one".