84101689 has 6 divisors (see below), whose sum is σ = 97832634. Its totient is φ = 72087120.

The previous prime is 84101651. The next prime is 84101713. The reversal of 84101689 is 98610148.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72812089 + 11289600 = 8533^2 + 3360^2 .

It is not a de Polignac number, because 84101689 - 2¹⁷ = 83970617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84101489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 858132 + ... + 858229.

It is an arithmetic number, because the mean of its divisors is an integer number (16305439).

Almost surely, 2^84101689 is an apocalyptic number.

It is an amenable number.

84101689 is a deficient number, since it is larger than the sum of its proper divisors (13730945).

84101689 is a wasteful number, since it uses less digits than its factorization.

84101689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716375 (or 1716368 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 84101689 is about 9170.6973017323. The cubic root of 84101689 is about 438.1285684856.

The spelling of 84101689 in words is "eighty-four million, one hundred one thousand, six hundred eighty-nine".