87684285 has 16 divisors (see below), whose sum is σ = 151087104. Its totient is φ = 43167552.

The previous prime is 87684277. The next prime is 87684301. The reversal of 87684285 is 58248678.

It is not a de Polignac number, because 87684285 - 2³ = 87684277 is a prime.

It is a super-2 number, since 2×87684285² = 15377067671922450, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 224637 + ... + 225026.

It is an arithmetic number, because the mean of its divisors is an integer number (9442944).

Almost surely, 2^87684285 is an apocalyptic number.

It is an amenable number.

87684285 is a deficient number, since it is larger than the sum of its proper divisors (63402819).

87684285 is a wasteful number, since it uses less digits than its factorization.

87684285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449684.

The product of its digits is 860160, while the sum is 48.

The square root of 87684285 is about 9363.9887334405. The cubic root of 87684285 is about 444.2634535390.

The spelling of 87684285 in words is "eighty-seven million, six hundred eighty-four thousand, two hundred eighty-five".