70870878 has 96 divisors (see below), whose sum is σ = 173365920. Its totient is φ = 20782080.

The previous prime is 70870871. The next prime is 70870879. The reversal of 70870878 is 87807807.

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 (70870871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 796258 + ... + 796346.

It is an arithmetic number, because the mean of its divisors is an integer number (1805895).

Almost surely, 2^70870878 is an apocalyptic number.

70870878 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 70870878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86682960).

70870878 is an abundant number, since it is smaller than the sum of its proper divisors (102495042).

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

70870878 is a wasteful number, since it uses less digits than its factorization.

70870878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 45.

The square root of 70870878 is about 8418.4843053842. The cubic root of 70870878 is about 413.8306035253.

The spelling of 70870878 in words is "seventy million, eight hundred seventy thousand, eight hundred seventy-eight".