1606447 has 4 divisors (see below), whose sum is σ = 1611400. Its totient is φ = 1601496.

The previous prime is 1606439. The next prime is 1606457. The reversal of 1606447 is 7446061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1606447 - 2³ = 1606439 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 1953 + ... + 2650.

It is an arithmetic number, because the mean of its divisors is an integer number (402850).

2^1606447 is an apocalyptic number.

1606447 is a deficient number, since it is larger than the sum of its proper divisors (4953).

1606447 is an equidigital number, since it uses as much as digits as its factorization.

1606447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4952.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 1606447 is about 1267.4569026204. The cubic root of 1606447 is about 117.1175918572.

The spelling of 1606447 in words is "one million, six hundred six thousand, four hundred forty-seven".