84898775646 has 16 divisors (see below), whose sum is σ = 188663946000. Its totient is φ = 28299591864.

The previous prime is 84898775581. The next prime is 84898775653. The reversal of 84898775646 is 64657789848.

84898775646 is a `hidden beast` number, since 8 + 489 + 87 + 7 + 5 + 64 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786099721 + ... + 786099828.

It is an arithmetic number, because the mean of its divisors is an integer number (11791496625).

Almost surely, 2^84898775646 is an apocalyptic number.

84898775646 is an abundant number, since it is smaller than the sum of its proper divisors (103765170354).

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

84898775646 is a wasteful number, since it uses less digits than its factorization.

84898775646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572199560 (or 1572199554 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 72.

The spelling of 84898775646 in words is "eighty-four billion, eight hundred ninety-eight million, seven hundred seventy-five thousand, six hundred forty-six".