820695071 has 8 divisors (see below), whose sum is σ = 957079200. Its totient is φ = 703452624.

The previous prime is 820695067. The next prime is 820695091. The reversal of 820695071 is 170596028.

820695071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 820695071 - 2² = 820695067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820695091) 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, 1196006 + ... + 1196691.

It is an arithmetic number, because the mean of its divisors is an integer number (119634900).

Almost surely, 2^820695071 is an apocalyptic number.

820695071 is a deficient number, since it is larger than the sum of its proper divisors (136384129).

820695071 is an equidigital number, since it uses as much as digits as its factorization.

820695071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392718 (or 2392704 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 820695071 is about 28647.7760218834. The cubic root of 820695071 is about 936.2545508848.

The spelling of 820695071 in words is "eight hundred twenty million, six hundred ninety-five thousand, seventy-one".