84675057689 has 2 divisors, whose sum is σ = 84675057690. Its totient is φ = 84675057688.

The previous prime is 84675057647. The next prime is 84675057713. The reversal of 84675057689 is 98675057648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78972240400 + 5702817289 = 281020^2 + 75517^2 .

It is a cyclic number.

It is not a de Polignac number, because 84675057689 - 2⁸ = 84675057433 is a prime.

It is not a weakly prime, because it can be changed into another prime (84675057289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42337528844 + 42337528845.

It is an arithmetic number, because the mean of its divisors is an integer number (42337528845).

Almost surely, 2^84675057689 is an apocalyptic number.

It is an amenable number.

84675057689 is a deficient number, since it is larger than the sum of its proper divisors (1).

84675057689 is an equidigital number, since it uses as much as digits as its factorization.

84675057689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101606400, while the sum is 65.

The spelling of 84675057689 in words is "eighty-four billion, six hundred seventy-five million, fifty-seven thousand, six hundred eighty-nine".