84287698668 has 18 divisors (see below), whose sum is σ = 213060571724. Its totient is φ = 28095899544.

The previous prime is 84287698667. The next prime is 84287698679. The reversal of 84287698668 is 86689678248.

84287698668 is a `hidden beast` number, since 8 + 428 + 7 + 69 + 86 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×84287698668² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84287698596 and 84287698605.

It is not an unprimeable number, because it can be changed into a prime (84287698667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1170662446 + ... + 1170662517.

Almost surely, 2^84287698668 is an apocalyptic number.

It is an amenable number.

84287698668 is an abundant number, since it is smaller than the sum of its proper divisors (128772873056).

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

84287698668 is a wasteful number, since it uses less digits than its factorization.

84287698668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341324973 (or 2341324968 counting only the distinct ones).

The product of its digits is 445906944, while the sum is 72.

The spelling of 84287698668 in words is "eighty-four billion, two hundred eighty-seven million, six hundred ninety-eight thousand, six hundred sixty-eight".