822080861 has 4 divisors (see below), whose sum is σ = 939520992. Its totient is φ = 704640732.

The previous prime is 822080851. The next prime is 822080863. The reversal of 822080861 is 168080228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-822080861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822080863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58720055 + ... + 58720068.

It is an arithmetic number, because the mean of its divisors is an integer number (234880248).

Almost surely, 2^822080861 is an apocalyptic number.

It is an amenable number.

822080861 is a deficient number, since it is larger than the sum of its proper divisors (117440131).

822080861 is a wasteful number, since it uses less digits than its factorization.

822080861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117440130.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 822080861 is about 28671.9525146091. The cubic root of 822080861 is about 936.7812274587.

The spelling of 822080861 in words is "eight hundred twenty-two million, eighty thousand, eight hundred sixty-one".