1606423 has 16 divisors (see below), whose sum is σ = 2007040. Its totient is φ = 1251936.

The previous prime is 1606403. The next prime is 1606427. The reversal of 1606423 is 3246061.

It is not a de Polignac number, because 1606423 - 2¹⁷ = 1475351 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1606394 and 1606403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11488 + ... + 11626.

It is an arithmetic number, because the mean of its divisors is an integer number (125440).

2^1606423 is an apocalyptic number.

1606423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1606423 is a deficient number, since it is larger than the sum of its proper divisors (400617).

1606423 is a wasteful number, since it uses less digits than its factorization.

1606423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1606423 is about 1267.4474348075. The cubic root of 1606423 is about 117.1170086164.

The spelling of 1606423 in words is "one million, six hundred six thousand, four hundred twenty-three".