84684541 has 2 divisors, whose sum is σ = 84684542. Its totient is φ = 84684540.

The previous prime is 84684517. The next prime is 84684569. The reversal of 84684541 is 14548648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73462041 + 11222500 = 8571^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 84684541 - 2⁹ = 84684029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84684494 and 84684503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84684581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42342270 + 42342271.

It is an arithmetic number, because the mean of its divisors is an integer number (42342271).

Almost surely, 2^84684541 is an apocalyptic number.

It is an amenable number.

84684541 is a deficient number, since it is larger than the sum of its proper divisors (1).

84684541 is an equidigital number, since it uses as much as digits as its factorization.

84684541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122880, while the sum is 40.

The square root of 84684541 is about 9202.4203881370. The cubic root of 84684541 is about 439.1383637210.

The spelling of 84684541 in words is "eighty-four million, six hundred eighty-four thousand, five hundred forty-one".