68880871 has 4 divisors (see below), whose sum is σ = 72506200. Its totient is φ = 65255544.

The previous prime is 68880869. The next prime is 68880881. The reversal of 68880871 is 17808886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17808886 = 2 ⋅8904443.

It is a cyclic number.

It is not a de Polignac number, because 68880871 - 2¹ = 68880869 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 (68880881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1812636 + ... + 1812673.

It is an arithmetic number, because the mean of its divisors is an integer number (18126550).

Almost surely, 2^68880871 is an apocalyptic number.

68880871 is a deficient number, since it is larger than the sum of its proper divisors (3625329).

68880871 is a wasteful number, since it uses less digits than its factorization.

68880871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625328.

The product of its (nonzero) digits is 172032, while the sum is 46.

The square root of 68880871 is about 8299.4500420209. The cubic root of 68880871 is about 409.9204108847.

It can be divided in two parts, 68880 and 871, that added together give a triangular number (69751 = T₃₇₃).

The spelling of 68880871 in words is "sixty-eight million, eight hundred eighty thousand, eight hundred seventy-one".