84624717864 has 64 divisors (see below), whose sum is σ = 216634291200. Its totient is φ = 27535080384.

The previous prime is 84624717833. The next prime is 84624717871. The reversal of 84624717864 is 46871742648.

It is a super-2 number, since 2×84624717864² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328539 + ... + 526485.

It is an arithmetic number, because the mean of its divisors is an integer number (3384910800).

Almost surely, 2^84624717864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84624717864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108317145600).

84624717864 is an abundant number, since it is smaller than the sum of its proper divisors (132009573336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84624717864 is a wasteful number, since it uses less digits than its factorization.

84624717864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198382 (or 198378 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 57.

The spelling of 84624717864 in words is "eighty-four billion, six hundred twenty-four million, seven hundred seventeen thousand, eight hundred sixty-four".