84987285 has 16 divisors (see below), whose sum is σ = 143136960. Its totient is φ = 42940800.

The previous prime is 84987263. The next prime is 84987293. The reversal of 84987285 is 58278948.

It is a happy number.

It is not a de Polignac number, because 84987285 - 2⁹ = 84986773 is a prime.

It is a super-2 number, since 2×84987285² = 14445677223342450, which contains 22 as substring.

It is a congruent number.

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, 148816 + ... + 149385.

It is an arithmetic number, because the mean of its divisors is an integer number (8946060).

Almost surely, 2^84987285 is an apocalyptic number.

It is an amenable number.

84987285 is a deficient number, since it is larger than the sum of its proper divisors (58149675).

84987285 is a wasteful number, since it uses less digits than its factorization.

84987285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298228.

The product of its digits is 1290240, while the sum is 51.

The square root of 84987285 is about 9218.8548638104. The cubic root of 84987285 is about 439.6610423228.

The spelling of 84987285 in words is "eighty-four million, nine hundred eighty-seven thousand, two hundred eighty-five".