1606331 has 2 divisors, whose sum is σ = 1606332. Its totient is φ = 1606330.

The previous prime is 1606321. The next prime is 1606349. The reversal of 1606331 is 1336061.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606331 is a prime.

It is a super-2 number, since 2×1606331² = 5160598563122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1606321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803165 + 803166.

It is an arithmetic number, because the mean of its divisors is an integer number (803166).

2^1606331 is an apocalyptic number.

1606331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606331 is an equidigital number, since it uses as much as digits as its factorization.

1606331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1606331 is about 1267.4111408694. The cubic root of 1606331 is about 117.1147728063.

The spelling of 1606331 in words is "one million, six hundred six thousand, three hundred thirty-one".