1606457 has 2 divisors, whose sum is σ = 1606458. Its totient is φ = 1606456.

The previous prime is 1606439. The next prime is 1606463. The reversal of 1606457 is 7546061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1297321 + 309136 = 1139^2 + 556^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606457 - 2⁸ = 1606201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1606427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803228 + 803229.

It is an arithmetic number, because the mean of its divisors is an integer number (803229).

2^1606457 is an apocalyptic number.

It is an amenable number.

1606457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606457 is an equidigital number, since it uses as much as digits as its factorization.

1606457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1606457 is about 1267.4608475215. The cubic root of 1606457 is about 117.1178348725.

The spelling of 1606457 in words is "one million, six hundred six thousand, four hundred fifty-seven".