7878873 has 4 divisors (see below), whose sum is σ = 10505168. Its totient is φ = 5252580.

The previous prime is 7878869. The next prime is 7878877. The reversal of 7878873 is 3788787.

7878873 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3788787 = 3 ⋅1262929.

It is an interprime number because it is at equal distance from previous prime (7878869) and next prime (7878877).

It is not a de Polignac number, because 7878873 - 2² = 7878869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7878877) 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, 1313143 + ... + 1313148.

It is an arithmetic number, because the mean of its divisors is an integer number (2626292).

Almost surely, 2^7878873 is an apocalyptic number.

It is an amenable number.

7878873 is a deficient number, since it is larger than the sum of its proper divisors (2626295).

7878873 is a wasteful number, since it uses less digits than its factorization.

7878873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626294.

The product of its digits is 526848, while the sum is 48.

The square root of 7878873 is about 2806.9330237824. The cubic root of 7878873 is about 198.9854706866.

The spelling of 7878873 in words is "seven million, eight hundred seventy-eight thousand, eight hundred seventy-three".