84168745 has 8 divisors (see below), whose sum is σ = 101156616. Its totient is φ = 67232256.

The previous prime is 84168739. The next prime is 84168757. The reversal of 84168745 is 54786148.

It can be written as a sum of positive squares in 4 ways, for example, as 25431849 + 58736896 = 5043^2 + 7664^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84168745 - 2³ = 84168737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9142 + ... + 15871.

It is an arithmetic number, because the mean of its divisors is an integer number (12644577).

Almost surely, 2^84168745 is an apocalyptic number.

It is an amenable number.

84168745 is a deficient number, since it is larger than the sum of its proper divisors (16987871).

84168745 is a wasteful number, since it uses less digits than its factorization.

84168745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25691.

The product of its digits is 215040, while the sum is 43.

The square root of 84168745 is about 9174.3525657127. The cubic root of 84168745 is about 438.2449805137.

It can be divided in two parts, 8416 and 8745, that added together give a square (17161 = 131²).

The spelling of 84168745 in words is "eighty-four million, one hundred sixty-eight thousand, seven hundred forty-five".