1682669 has 2 divisors, whose sum is σ = 1682670. Its totient is φ = 1682668.

The previous prime is 1682663. The next prime is 1682671. The reversal of 1682669 is 9662861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1276900 + 405769 = 1130^2 + 637^2 .

It is a cyclic number.

It is not a de Polignac number, because 1682669 - 2⁸ = 1682413 is a prime.

It is a super-2 number, since 2×1682669² = 5662749927122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1682671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1682663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841334 + 841335.

It is an arithmetic number, because the mean of its divisors is an integer number (841335).

2^1682669 is an apocalyptic number.

It is an amenable number.

1682669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1682669 is an equidigital number, since it uses as much as digits as its factorization.

1682669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 1682669 is about 1297.1773201841. The cubic root of 1682669 is about 118.9413594280.

The spelling of 1682669 in words is "one million, six hundred eighty-two thousand, six hundred sixty-nine".