84684461 has 2 divisors, whose sum is σ = 84684462. Its totient is φ = 84684460.

The previous prime is 84684427. The next prime is 84684493. The reversal of 84684461 is 16448648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62884900 + 21799561 = 7930^2 + 4669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84684461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84684961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42342230 + 42342231.

It is an arithmetic number, because the mean of its divisors is an integer number (42342231).

Almost surely, 2^84684461 is an apocalyptic number.

It is an amenable number.

84684461 is a deficient number, since it is larger than the sum of its proper divisors (1).

84684461 is an equidigital number, since it uses as much as digits as its factorization.

84684461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 41.

The square root of 84684461 is about 9202.4160414535. The cubic root of 84684461 is about 439.1382254388.

The spelling of 84684461 in words is "eighty-four million, six hundred eighty-four thousand, four hundred sixty-one".