47861687 has 8 divisors (see below), whose sum is σ = 49735200. Its totient is φ = 46003104.

The previous prime is 47861677. The next prime is 47861707. The reversal of 47861687 is 78616874.

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

It is a cyclic number.

It is not a de Polignac number, because 47861687 - 2⁸ = 47861431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47861617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3038 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (6216900).

Almost surely, 2^47861687 is an apocalyptic number.

47861687 is a deficient number, since it is larger than the sum of its proper divisors (1873513).

47861687 is a wasteful number, since it uses less digits than its factorization.

47861687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465.

The product of its digits is 451584, while the sum is 47.

The square root of 47861687 is about 6918.2141481744. The cubic root of 47861687 is about 363.0747113535.

The spelling of 47861687 in words is "forty-seven million, eight hundred sixty-one thousand, six hundred eighty-seven".