47320647 has 16 divisors (see below), whose sum is σ = 69144192. Its totient is φ = 28548320.

The previous prime is 47320633. The next prime is 47320657. The reversal of 47320647 is 74602374.

It is a cyclic number.

It is not a de Polignac number, because 47320647 - 2¹² = 47316551 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47320627) 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, 4333 + ... + 10649.

It is an arithmetic number, because the mean of its divisors is an integer number (4321512).

Almost surely, 2^47320647 is an apocalyptic number.

47320647 is a deficient number, since it is larger than the sum of its proper divisors (21823545).

47320647 is a wasteful number, since it uses less digits than its factorization.

47320647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6558.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 47320647 is about 6879.0004361099. Note that the first 3 decimals coincide. The cubic root of 47320647 is about 361.7014290762.

The spelling of 47320647 in words is "forty-seven million, three hundred twenty thousand, six hundred forty-seven".