47687285 has 4 divisors (see below), whose sum is σ = 57224748. Its totient is φ = 38149824.

The previous prime is 47687279. The next prime is 47687287. The reversal of 47687285 is 58278674.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5202961 + 42484324 = 2281^2 + 6518^2 .

It is a cyclic number.

It is not a de Polignac number, because 47687285 - 2¹² = 47683189 is a prime.

It is a super-3 number, since 3×47687285³ (a number of 24 digits) contains 333 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 (47687287) 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, 4768724 + ... + 4768733.

It is an arithmetic number, because the mean of its divisors is an integer number (14306187).

Almost surely, 2^47687285 is an apocalyptic number.

It is an amenable number.

47687285 is a deficient number, since it is larger than the sum of its proper divisors (9537463).

47687285 is an equidigital number, since it uses as much as digits as its factorization.

47687285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9537462.

The product of its digits is 752640, while the sum is 47.

The square root of 47687285 is about 6905.5980914038. The cubic root of 47687285 is about 362.6331750080.

The spelling of 47687285 in words is "forty-seven million, six hundred eighty-seven thousand, two hundred eighty-five".