84705117 has 8 divisors (see below), whose sum is σ = 129074496. Its totient is φ = 48402912.

The previous prime is 84705107. The next prime is 84705121. The reversal of 84705117 is 71150748.

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

It is not a de Polignac number, because 84705117 - 2¹⁵ = 84672349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84705107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2016768 + ... + 2016809.

It is an arithmetic number, because the mean of its divisors is an integer number (16134312).

Almost surely, 2^84705117 is an apocalyptic number.

It is an amenable number.

84705117 is a deficient number, since it is larger than the sum of its proper divisors (44369379).

84705117 is a wasteful number, since it uses less digits than its factorization.

84705117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033587.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 84705117 is about 9203.5382869851. The cubic root of 84705117 is about 439.1739269976.

The spelling of 84705117 in words is "eighty-four million, seven hundred five thousand, one hundred seventeen".