1606259 has 2 divisors, whose sum is σ = 1606260. Its totient is φ = 1606258.

The previous prime is 1606249. The next prime is 1606261. The reversal of 1606259 is 9526061.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606259 is a prime.

It is a Sophie Germain prime.

Together with 1606261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1606249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803129 + 803130.

It is an arithmetic number, because the mean of its divisors is an integer number (803130).

2^1606259 is an apocalyptic number.

1606259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606259 is an equidigital number, since it uses as much as digits as its factorization.

1606259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1606259 is about 1267.3827361930. The cubic root of 1606259 is about 117.1130229823.

The spelling of 1606259 in words is "one million, six hundred six thousand, two hundred fifty-nine".