84082643 has 4 divisors (see below), whose sum is σ = 84216528. Its totient is φ = 83948760.

The previous prime is 84082631. The next prime is 84082651. The reversal of 84082643 is 34628048.

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 84082643 - 2¹⁴ = 84066259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84082613) 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, 65996 + ... + 67257.

It is an arithmetic number, because the mean of its divisors is an integer number (21054132).

Almost surely, 2^84082643 is an apocalyptic number.

84082643 is a deficient number, since it is larger than the sum of its proper divisors (133885).

84082643 is a wasteful number, since it uses less digits than its factorization.

84082643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133884.

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 84082643 is about 9169.6588268048. The cubic root of 84082643 is about 438.0954925477.

The spelling of 84082643 in words is "eighty-four million, eighty-two thousand, six hundred forty-three".