1406505 has 16 divisors (see below), whose sum is σ = 2306304. Its totient is φ = 731520.

The previous prime is 1406497. The next prime is 1406521. The reversal of 1406505 is 5056041.

It is a happy number.

It is not a de Polignac number, because 1406505 - 2³ = 1406497 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 529 + ... + 1758.

It is an arithmetic number, because the mean of its divisors is an integer number (144144).

2^1406505 is an apocalyptic number.

1406505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1406505 is a deficient number, since it is larger than the sum of its proper divisors (899799).

1406505 is a wasteful number, since it uses less digits than its factorization.

1406505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1406505 is about 1185.9616351299. The cubic root of 1406505 is about 112.0418901552.

The spelling of 1406505 in words is "one million, four hundred six thousand, five hundred five".