84546857 has 2 divisors, whose sum is σ = 84546858. Its totient is φ = 84546856.

The previous prime is 84546817. The next prime is 84546859. The reversal of 84546857 is 75864548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48594841 + 35952016 = 6971^2 + 5996^2 .

It is a cyclic number.

It is not a de Polignac number, because 84546857 - 2⁸ = 84546601 is a prime.

Together with 84546859, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84546859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42273428 + 42273429.

It is an arithmetic number, because the mean of its divisors is an integer number (42273429).

Almost surely, 2^84546857 is an apocalyptic number.

It is an amenable number.

84546857 is a deficient number, since it is larger than the sum of its proper divisors (1).

84546857 is an equidigital number, since it uses as much as digits as its factorization.

84546857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1075200, while the sum is 47.

The square root of 84546857 is about 9194.9364870020. The cubic root of 84546857 is about 438.9002442136.

The spelling of 84546857 in words is "eighty-four million, five hundred forty-six thousand, eight hundred fifty-seven".