84609375 has 48 divisors (see below), whose sum is σ = 148827744. Its totient is φ = 42750000.

The previous prime is 84609367. The next prime is 84609401. The reversal of 84609375 is 57390648.

It is a happy number.

It is not a de Polignac number, because 84609375 - 2³ = 84609367 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 4453116 + ... + 4453134.

It is an arithmetic number, because the mean of its divisors is an integer number (3100578).

Almost surely, 2^84609375 is an apocalyptic number.

84609375 is a deficient number, since it is larger than the sum of its proper divisors (64218369).

84609375 is an frugal number, since it uses more digits than its factorization.

84609375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 84609375 is about 9198.3354472426. The cubic root of 84609375 is about 439.0083988548.

The spelling of 84609375 in words is "eighty-four million, six hundred nine thousand, three hundred seventy-five".