1690967 has 2 divisors, whose sum is σ = 1690968. Its totient is φ = 1690966.

The previous prime is 1690933. The next prime is 1690993. The reversal of 1690967 is 7690961.

It is a strong prime.

It is an emirp because it is prime and its reverse (7690961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1690967 - 2¹² = 1686871 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1690967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1690067) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845483 + 845484.

It is an arithmetic number, because the mean of its divisors is an integer number (845484).

2^1690967 is an apocalyptic number.

1690967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690967 is an equidigital number, since it uses as much as digits as its factorization.

1690967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 1690967 is about 1300.3718698895. The cubic root of 1690967 is about 119.1365567453.

The spelling of 1690967 in words is "one million, six hundred ninety thousand, nine hundred sixty-seven".