47878685 has 4 divisors (see below), whose sum is σ = 57454428. Its totient is φ = 38302944.

The previous prime is 47878673. The next prime is 47878697. The reversal of 47878685 is 58687874.

It is a happy number.

47878685 is digitally balanced in base 2, 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.

It is an interprime number because it is at equal distance from previous prime (47878673) and next prime (47878697).

It can be written as a sum of positive squares in 2 ways, for example, as 20557156 + 27321529 = 4534^2 + 5227^2 .

It is a cyclic number.

It is not a de Polignac number, because 47878685 - 2¹⁴ = 47862301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4787864 + ... + 4787873.

It is an arithmetic number, because the mean of its divisors is an integer number (14363607).

Almost surely, 2^47878685 is an apocalyptic number.

It is an amenable number.

47878685 is a deficient number, since it is larger than the sum of its proper divisors (9575743).

47878685 is an equidigital number, since it uses as much as digits as its factorization.

47878685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9575742.

The product of its digits is 3010560, while the sum is 53.

The square root of 47878685 is about 6919.4425353492. The cubic root of 47878685 is about 363.1176880632.

The spelling of 47878685 in words is "forty-seven million, eight hundred seventy-eight thousand, six hundred eighty-five".