84704689 has 2 divisors, whose sum is σ = 84704690. Its totient is φ = 84704688.

The previous prime is 84704657. The next prime is 84704723. The reversal of 84704689 is 98640748.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63728289 + 20976400 = 7983^2 + 4580^2 .

It is a cyclic number.

It is not a de Polignac number, because 84704689 - 2⁵ = 84704657 is a prime.

It is not a weakly prime, because it can be changed into another prime (84704629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42352344 + 42352345.

It is an arithmetic number, because the mean of its divisors is an integer number (42352345).

Almost surely, 2^84704689 is an apocalyptic number.

It is an amenable number.

84704689 is a deficient number, since it is larger than the sum of its proper divisors (1).

84704689 is an equidigital number, since it uses as much as digits as its factorization.

84704689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 84704689 is about 9203.5150350287. The cubic root of 84704689 is about 439.1731873069.

The spelling of 84704689 in words is "eighty-four million, seven hundred four thousand, six hundred eighty-nine".