406287 has 12 divisors (see below), whose sum is σ = 670800. Its totient is φ = 232128.

The previous prime is 406271. The next prime is 406309. The reversal of 406287 is 782604.

It is not a de Polignac number, because 406287 - 2⁴ = 406271 is a prime.

It is an Ulam number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 406287.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406287.

It is not an unprimeable number, because it can be changed into a prime (406207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3162 + ... + 3287.

It is an arithmetic number, because the mean of its divisors is an integer number (55900).

2⁴⁰⁶²⁸⁷ is an apocalyptic number.

406287 is a deficient number, since it is larger than the sum of its proper divisors (264513).

406287 is a wasteful number, since it uses less digits than its factorization.

406287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6462 (or 6459 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 406287 is about 637.4064637262. The cubic root of 406287 is about 74.0646501005.

The spelling of 406287 in words is "four hundred six thousand, two hundred eighty-seven".