7875878 has 16 divisors (see below), whose sum is σ = 12292560. Its totient is φ = 3780000.

The previous prime is 7875871. The next prime is 7875911. The reversal of 7875878 is 8785787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7875871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14288 + ... + 14828.

It is an arithmetic number, because the mean of its divisors is an integer number (768285).

Almost surely, 2^7875878 is an apocalyptic number.

7875878 is a deficient number, since it is larger than the sum of its proper divisors (4416682).

7875878 is a wasteful number, since it uses less digits than its factorization.

7875878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823.

The product of its digits is 878080, while the sum is 50.

The square root of 7875878 is about 2806.3994726339. The cubic root of 7875878 is about 198.9602540084.

Subtracting 7875878 from its reverse (8785787), we obtain a palindrome (909909).

The spelling of 7875878 in words is "seven million, eight hundred seventy-five thousand, eight hundred seventy-eight".