84673643 has 2 divisors, whose sum is σ = 84673644. Its totient is φ = 84673642.

The previous prime is 84673627. The next prime is 84673661. The reversal of 84673643 is 34637648.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84673643 - 2⁴ = 84673627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84673643.

It is not a weakly prime, because it can be changed into another prime (84673613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42336821 + 42336822.

It is an arithmetic number, because the mean of its divisors is an integer number (42336822).

Almost surely, 2^84673643 is an apocalyptic number.

84673643 is a deficient number, since it is larger than the sum of its proper divisors (1).

84673643 is an equidigital number, since it uses as much as digits as its factorization.

84673643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 84673643 is about 9201.8282422571. The cubic root of 84673643 is about 439.1195254335.

The spelling of 84673643 in words is "eighty-four million, six hundred seventy-three thousand, six hundred forty-three".