47761647 has 8 divisors (see below), whose sum is σ = 63728256. Its totient is φ = 31818072.

The previous prime is 47761643. The next prime is 47761661. The reversal of 47761647 is 74616774.

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

It is not a de Polignac number, because 47761647 - 2² = 47761643 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 47761599 and 47761608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47761643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133 + ... + 9774.

It is an arithmetic number, because the mean of its divisors is an integer number (7966032).

Almost surely, 2^47761647 is an apocalyptic number.

47761647 is a deficient number, since it is larger than the sum of its proper divisors (15966609).

47761647 is a wasteful number, since it uses less digits than its factorization.

47761647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11517.

The product of its digits is 197568, while the sum is 42.

The square root of 47761647 is about 6910.9801765017. The cubic root of 47761647 is about 362.8215699061.

The spelling of 47761647 in words is "forty-seven million, seven hundred sixty-one thousand, six hundred forty-seven".