406485 has 16 divisors (see below), whose sum is σ = 722880. Its totient is φ = 216720.

The previous prime is 406481. The next prime is 406499. The reversal of 406485 is 584604.

It is not a de Polignac number, because 406485 - 2² = 406481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 406485.

It is not an unprimeable number, because it can be changed into a prime (406481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371 + ... + 1640.

It is an arithmetic number, because the mean of its divisors is an integer number (45180).

2⁴⁰⁶⁴⁸⁵ is an apocalyptic number.

406485 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

406485 is a deficient number, since it is larger than the sum of its proper divisors (316395).

406485 is a wasteful number, since it uses less digits than its factorization.

406485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025 (or 3019 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 406485 is about 637.5617617141. The cubic root of 406485 is about 74.0766797077.

The spelling of 406485 in words is "four hundred six thousand, four hundred eighty-five".