71878 has 8 divisors (see below), whose sum is σ = 109368. Its totient is φ = 35424.

The previous prime is 71867. The next prime is 71879. The reversal of 71878 is 87817.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51 + ... + 382.

It is an arithmetic number, because the mean of its divisors is an integer number (13671).

2⁷¹⁸⁷⁸ is an apocalyptic number.

71878 is a deficient number, since it is larger than the sum of its proper divisors (37490).

71878 is a wasteful number, since it uses less digits than its factorization.

71878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

The product of its digits is 3136, while the sum is 31.

The square root of 71878 is about 268.1007273396. The cubic root of 71878 is about 41.5781659338.

It can be divided in two parts, 71 and 878, that added together give a palindrome (949).

The spelling of 71878 in words is "seventy-one thousand, eight hundred seventy-eight".