1690133 has 4 divisors (see below), whose sum is σ = 1697388. Its totient is φ = 1682880.

The previous prime is 1690121. The next prime is 1690153. The reversal of 1690133 is 3310961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3310961 = 733 ⋅4517.

It can be written as a sum of positive squares in 2 ways, for example, as 1350244 + 339889 = 1162^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1690133 - 2¹⁰ = 1689109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1690099 and 1690108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3266 + ... + 3747.

It is an arithmetic number, because the mean of its divisors is an integer number (424347).

2^1690133 is an apocalyptic number.

It is an amenable number.

1690133 is a deficient number, since it is larger than the sum of its proper divisors (7255).

1690133 is an equidigital number, since it uses as much as digits as its factorization.

1690133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7254.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1690133 is about 1300.0511528398. The cubic root of 1690133 is about 119.1169671203.

The spelling of 1690133 in words is "one million, six hundred ninety thousand, one hundred thirty-three".