84985557 has 8 divisors (see below), whose sum is σ = 113745984. Its totient is φ = 56441088.

The previous prime is 84985543. The next prime is 84985561. The reversal of 84985557 is 75558948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84985557 - 2⁶ = 84985493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84985597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53068 + ... + 54645.

It is an arithmetic number, because the mean of its divisors is an integer number (14218248).

Almost surely, 2^84985557 is an apocalyptic number.

It is an amenable number.

84985557 is a deficient number, since it is larger than the sum of its proper divisors (28760427).

84985557 is a wasteful number, since it uses less digits than its factorization.

84985557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107979.

The product of its digits is 2016000, while the sum is 51.

The square root of 84985557 is about 9218.7611423661. The cubic root of 84985557 is about 439.6580625068.

The spelling of 84985557 in words is "eighty-four million, nine hundred eighty-five thousand, five hundred fifty-seven".