84691865604 has 12 divisors (see below), whose sum is σ = 197614353104. Its totient is φ = 28230621864.

The previous prime is 84691865603. The next prime is 84691865651. The reversal of 84691865604 is 40656819648.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (84691865603) 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 3 ways as a sum of consecutive naturals, for example, 3528827722 + ... + 3528827745.

Almost surely, 2^84691865604 is an apocalyptic number.

It is an amenable number.

84691865604 is an abundant number, since it is smaller than the sum of its proper divisors (112922487500).

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

84691865604 is a wasteful number, since it uses less digits than its factorization.

84691865604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7057655474 (or 7057655472 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 84691865604 in words is "eighty-four billion, six hundred ninety-one million, eight hundred sixty-five thousand, six hundred four".