820375211 has 8 divisors (see below), whose sum is σ = 852017760. Its totient is φ = 789231168.

The previous prime is 820375207. The next prime is 820375243. The reversal of 820375211 is 112573028.

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 820375211 - 2² = 820375207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820375291) 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, 121271 + ... + 127856.

It is an arithmetic number, because the mean of its divisors is an integer number (106502220).

Almost surely, 2^820375211 is an apocalyptic number.

820375211 is a deficient number, since it is larger than the sum of its proper divisors (31642549).

820375211 is a wasteful number, since it uses less digits than its factorization.

820375211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249253.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 820375211 is about 28642.1928455207. The cubic root of 820375211 is about 936.1329022542.

The spelling of 820375211 in words is "eight hundred twenty million, three hundred seventy-five thousand, two hundred eleven".