70878 has 8 divisors (see below), whose sum is σ = 141768. Its totient is φ = 23624.

The previous prime is 70877. The next prime is 70879. The reversal of 70878 is 87807.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70877) and next prime (70879).

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

70878 is an admirable number.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70877) 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, 5901 + ... + 5912.

It is an arithmetic number, because the mean of its divisors is an integer number (17721).

2⁷⁰⁸⁷⁸ is an apocalyptic number.

70878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70884).

70878 is a wasteful number, since it uses less digits than its factorization.

70878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11818.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 70878 is about 266.2292245416. The cubic root of 70878 is about 41.3844465368.

The spelling of 70878 in words is "seventy thousand, eight hundred seventy-eight".