286506864 has 60 divisors (see below), whose sum is σ = 916370416. Its totient is φ = 81858816.

The previous prime is 286506859. The next prime is 286506901. The reversal of 286506864 is 468605682.

286506864 is a `hidden beast` number, since 2 + 86 + 506 + 8 + 64 = 666.

It is a super-2 number, since 2×286506864² = 164172366238228992, 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 11 ways as a sum of consecutive naturals, for example, 141109 + ... + 143124.

Almost surely, 2^286506864 is an apocalyptic number.

286506864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

286506864 is an abundant number, since it is smaller than the sum of its proper divisors (629863552).

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

286506864 is a wasteful number, since it uses less digits than its factorization.

286506864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284254 (or 284245 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 286506864 is about 16926.5136398492. The cubic root of 286506864 is about 659.2422156763.

The spelling of 286506864 in words is "two hundred eighty-six million, five hundred six thousand, eight hundred sixty-four".