47685861 has 16 divisors (see below), whose sum is σ = 71019520. Its totient is φ = 31622400.

The previous prime is 47685853. The next prime is 47685917. The reversal of 47685861 is 16858674.

It is a happy number.

47685861 is a `hidden beast` number, since 4 + 7 + 68 + 586 + 1 = 666.

It is not a de Polignac number, because 47685861 - 2³ = 47685853 is a prime.

It is a super-2 number, since 2×47685861² = 4547882678622642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47685761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636 + ... + 9786.

It is an arithmetic number, because the mean of its divisors is an integer number (4438720).

Almost surely, 2^47685861 is an apocalyptic number.

It is an amenable number.

47685861 is a deficient number, since it is larger than the sum of its proper divisors (23333659).

47685861 is a wasteful number, since it uses less digits than its factorization.

47685861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9353 (or 9347 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 47685861 is about 6905.4949858790. The cubic root of 47685861 is about 362.6295654170.

The spelling of 47685861 in words is "forty-seven million, six hundred eighty-five thousand, eight hundred sixty-one".