47641687 has 4 divisors (see below), whose sum is σ = 48005496. Its totient is φ = 47277880.

The previous prime is 47641679. The next prime is 47641697. The reversal of 47641687 is 78614674.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47641687 - 2³ = 47641679 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 (47641697) 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, 181708 + ... + 181969.

It is an arithmetic number, because the mean of its divisors is an integer number (12001374).

Almost surely, 2^47641687 is an apocalyptic number.

47641687 is a deficient number, since it is larger than the sum of its proper divisors (363809).

47641687 is a wasteful number, since it uses less digits than its factorization.

47641687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363808.

The product of its digits is 225792, while the sum is 43.

The square root of 47641687 is about 6902.2957774932. The cubic root of 47641687 is about 362.5175563435.

The spelling of 47641687 in words is "forty-seven million, six hundred forty-one thousand, six hundred eighty-seven".