78881 has 8 divisors (see below), whose sum is σ = 88128. Its totient is φ = 70000.

The previous prime is 78877. The next prime is 78887. The reversal of 78881 is 18887.

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 78881 - 2² = 78877 is a prime.

It is a super-2 number, since 2×78881² = 12444424322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78887) 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, 731 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (11016).

2⁷⁸⁸⁸¹ is an apocalyptic number.

78881 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

78881 is a deficient number, since it is larger than the sum of its proper divisors (9247).

78881 is a wasteful number, since it uses less digits than its factorization.

78881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183.

The product of its digits is 3584, while the sum is 32.

The square root of 78881 is about 280.8576151718. The cubic root of 78881 is about 42.8868487172.

It can be divided in two parts, 78 and 881, that added together give a palindrome (959).

The spelling of 78881 in words is "seventy-eight thousand, eight hundred eighty-one".