84649517 has 8 divisors (see below), whose sum is σ = 86187192. Its totient is φ = 83116800.

The previous prime is 84649507. The next prime is 84649529. The reversal of 84649517 is 71594648.

It can be written as a sum of positive squares in 4 ways, for example, as 4116841 + 80532676 = 2029^2 + 8974^2 .

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 84649517 - 2²⁰ = 83600941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84649507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56417 + ... + 57897.

It is an arithmetic number, because the mean of its divisors is an integer number (10773399).

Almost surely, 2^84649517 is an apocalyptic number.

It is an amenable number.

84649517 is a deficient number, since it is larger than the sum of its proper divisors (1537675).

84649517 is a wasteful number, since it uses less digits than its factorization.

84649517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479.

The product of its digits is 241920, while the sum is 44.

The square root of 84649517 is about 9200.5172137223. The cubic root of 84649517 is about 439.0778154686.

The spelling of 84649517 in words is "eighty-four million, six hundred forty-nine thousand, five hundred seventeen".