1606147 has 4 divisors (see below), whose sum is σ = 1610080. Its totient is φ = 1602216.

The previous prime is 1606139. The next prime is 1606151. The reversal of 1606147 is 7416061.

It is a happy number.

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 1606147 - 2³ = 1606139 is a prime.

It is a Duffinian number.

1606147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1606117) 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, 1272 + ... + 2197.

It is an arithmetic number, because the mean of its divisors is an integer number (402520).

2^1606147 is an apocalyptic number.

1606147 is a deficient number, since it is larger than the sum of its proper divisors (3933).

1606147 is an equidigital number, since it uses as much as digits as its factorization.

1606147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1606147 is about 1267.3385498753. The cubic root of 1606147 is about 117.1103009299.

The spelling of 1606147 in words is "one million, six hundred six thousand, one hundred forty-seven".