8216147 has 4 divisors (see below), whose sum is σ = 8481216. Its totient is φ = 7951080.

The previous prime is 8216137. The next prime is 8216149. The reversal of 8216147 is 7416128.

8216147 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8216147 - 2¹⁸ = 7954003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8216149) 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, 132488 + ... + 132549.

It is an arithmetic number, because the mean of its divisors is an integer number (2120304).

Almost surely, 2^8216147 is an apocalyptic number.

8216147 is a deficient number, since it is larger than the sum of its proper divisors (265069).

8216147 is a wasteful number, since it uses less digits than its factorization.

8216147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265068.

The product of its digits is 2688, while the sum is 29.

The square root of 8216147 is about 2866.3822145694. The cubic root of 8216147 is about 201.7852421382.

The spelling of 8216147 in words is "eight million, two hundred sixteen thousand, one hundred forty-seven".