1690099 has 2 divisors, whose sum is σ = 1690100. Its totient is φ = 1690098.

The previous prime is 1690097. The next prime is 1690103. The reversal of 1690099 is 9900961.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1690099 - 2¹ = 1690097 is a prime.

Together with 1690097, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1690097) 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, 845049 + 845050.

It is an arithmetic number, because the mean of its divisors is an integer number (845050).

2^1690099 is an apocalyptic number.

1690099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690099 is an equidigital number, since it uses as much as digits as its factorization.

1690099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 1690099 is about 1300.0380763655. The cubic root of 1690099 is about 119.1161683658.

The spelling of 1690099 in words is "one million, six hundred ninety thousand, ninety-nine".