68017887 has 36 divisors (see below), whose sum is σ = 116674896. Its totient is φ = 38841120.

The previous prime is 68017879. The next prime is 68017907. The reversal of 68017887 is 78871086.

It is not a de Polignac number, because 68017887 - 2³ = 68017879 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68017487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 45187 + ... + 46667.

Almost surely, 2^68017887 is an apocalyptic number.

68017887 is a deficient number, since it is larger than the sum of its proper divisors (48657009).

68017887 is an frugal number, since it uses more digits than its factorization.

68017887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 68017887 is about 8247.2957386043. The cubic root of 68017887 is about 408.2012955664.

The spelling of 68017887 in words is "sixty-eight million, seventeen thousand, eight hundred eighty-seven".