820882135 has 4 divisors (see below), whose sum is σ = 985058568. Its totient is φ = 656705704.

The previous prime is 820882129. The next prime is 820882147. The reversal of 820882135 is 531288028.

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

It is a cyclic number.

It is not a de Polignac number, because 820882135 - 2⁵ = 820882103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 820882094 and 820882103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82088209 + ... + 82088218.

It is an arithmetic number, because the mean of its divisors is an integer number (246264642).

Almost surely, 2^820882135 is an apocalyptic number.

820882135 is a deficient number, since it is larger than the sum of its proper divisors (164176433).

820882135 is a wasteful number, since it uses less digits than its factorization.

820882135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164176432.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 820882135 is about 28651.0407315336. The cubic root of 820882135 is about 936.3256801111.

The spelling of 820882135 in words is "eight hundred twenty million, eight hundred eighty-two thousand, one hundred thirty-five".