1606143 has 32 divisors (see below), whose sum is σ = 2833920. Its totient is φ = 783360.

The previous prime is 1606139. The next prime is 1606151. The reversal of 1606143 is 3416061.

It is not a de Polignac number, because 1606143 - 2² = 1606139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1606143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3723 + ... + 4131.

It is an arithmetic number, because the mean of its divisors is an integer number (88560).

2^1606143 is an apocalyptic number.

1606143 is a deficient number, since it is larger than the sum of its proper divisors (1227777).

1606143 is a wasteful number, since it uses less digits than its factorization.

1606143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1606143 is about 1267.3369717640. The cubic root of 1606143 is about 117.1102037114.

The spelling of 1606143 in words is "one million, six hundred six thousand, one hundred forty-three".