84166723 has 2 divisors, whose sum is σ = 84166724. Its totient is φ = 84166722.

The previous prime is 84166699. The next prime is 84166757. The reversal of 84166723 is 32766148.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84166723 - 2⁹ = 84166211 is a prime.

It is not a weakly prime, because it can be changed into another prime (84166783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42083361 + 42083362.

It is an arithmetic number, because the mean of its divisors is an integer number (42083362).

Almost surely, 2^84166723 is an apocalyptic number.

84166723 is a deficient number, since it is larger than the sum of its proper divisors (1).

84166723 is an equidigital number, since it uses as much as digits as its factorization.

84166723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 84166723 is about 9174.2423665390. The cubic root of 84166723 is about 438.2414711411.

The spelling of 84166723 in words is "eighty-four million, one hundred sixty-six thousand, seven hundred twenty-three".