47668217 has 4 divisors (see below), whose sum is σ = 47699280. Its totient is φ = 47637156.

The previous prime is 47668189. The next prime is 47668219. The reversal of 47668217 is 71286674.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47668217 - 2¹² = 47664121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47668219) 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, 13103 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (11924820).

Almost surely, 2^47668217 is an apocalyptic number.

It is an amenable number.

47668217 is a deficient number, since it is larger than the sum of its proper divisors (31063).

47668217 is a wasteful number, since it uses less digits than its factorization.

47668217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31062.

The product of its digits is 112896, while the sum is 41.

The square root of 47668217 is about 6904.2173343544. The cubic root of 47668217 is about 362.5848350001.

The spelling of 47668217 in words is "forty-seven million, six hundred sixty-eight thousand, two hundred seventeen".