1405683 has 12 divisors (see below), whose sum is σ = 2041000. Its totient is φ = 932256.

The previous prime is 1405681. The next prime is 1405693. The reversal of 1405683 is 3865041.

It is not a de Polignac number, because 1405683 - 2¹ = 1405681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2568 + ... + 3066.

2^1405683 is an apocalyptic number.

1405683 is a deficient number, since it is larger than the sum of its proper divisors (635317).

1405683 is a wasteful number, since it uses less digits than its factorization.

1405683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1405683 is about 1185.6150302691. The cubic root of 1405683 is about 112.0200591198.

The spelling of 1405683 in words is "one million, four hundred five thousand, six hundred eighty-three".