690133 has 4 divisors (see below), whose sum is σ = 697068. Its totient is φ = 683200.

The previous prime is 690127. The next prime is 690139. The reversal of 690133 is 331096.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (690127) and next prime (690139).

It can be written as a sum of positive squares in 2 ways, for example, as 400689 + 289444 = 633^2 + 538^2 .

It is a cyclic number.

It is not a de Polignac number, because 690133 - 2⁹ = 689621 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

690133 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3316 + ... + 3517.

It is an arithmetic number, because the mean of its divisors is an integer number (174267).

2⁶⁹⁰¹³³ is an apocalyptic number.

It is an amenable number.

690133 is a deficient number, since it is larger than the sum of its proper divisors (6935).

690133 is a wasteful number, since it uses less digits than its factorization.

690133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6934.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 690133 is about 830.7424390267. The cubic root of 690133 is about 88.3712364532.

The spelling of 690133 in words is "six hundred ninety thousand, one hundred thirty-three".