35820809 has 8 divisors (see below), whose sum is σ = 36379080. Its totient is φ = 35266176.

The previous prime is 35820797. The next prime is 35820823. The reversal of 35820809 is 90802853.

It can be written as a sum of positive squares in 4 ways, for example, as 4494400 + 31326409 = 2120^2 + 5597^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 35820809 - 2¹⁶ = 35755273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35820859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23927 + ... + 25379.

It is an arithmetic number, because the mean of its divisors is an integer number (4547385).

Almost surely, 2^35820809 is an apocalyptic number.

It is an amenable number.

35820809 is a deficient number, since it is larger than the sum of its proper divisors (558271).

35820809 is a wasteful number, since it uses less digits than its factorization.

35820809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 35820809 is about 5985.0487884394. The cubic root of 35820809 is about 329.6439655715.

The spelling of 35820809 in words is "thirty-five million, eight hundred twenty thousand, eight hundred nine".