84006688658 has 32 divisors (see below), whose sum is σ = 129965534208. Its totient is φ = 40707651600.

The previous prime is 84006688639. The next prime is 84006688741. The reversal of 84006688658 is 85688660048.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84006688597 and 84006688606.

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, 4624253 + ... + 4642383.

It is an arithmetic number, because the mean of its divisors is an integer number (4061422944).

Almost surely, 2^84006688658 is an apocalyptic number.

84006688658 is a deficient number, since it is larger than the sum of its proper divisors (45958845550).

84006688658 is a wasteful number, since it uses less digits than its factorization.

84006688658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18758.

The product of its (nonzero) digits is 17694720, while the sum is 59.

The spelling of 84006688658 in words is "eighty-four billion, six million, six hundred eighty-eight thousand, six hundred fifty-eight".