827799805 has 8 divisors (see below), whose sum is σ = 1135268352. Its totient is φ = 567634128.

The previous prime is 827799793. The next prime is 827799857. The reversal of 827799805 is 508997728.

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 827799805 - 2¹⁷ = 827668733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11825677 + ... + 11825746.

It is an arithmetic number, because the mean of its divisors is an integer number (141908544).

Almost surely, 2^827799805 is an apocalyptic number.

It is an amenable number.

827799805 is a deficient number, since it is larger than the sum of its proper divisors (307468547).

827799805 is a wasteful number, since it uses less digits than its factorization.

827799805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23651435.

The product of its (nonzero) digits is 2540160, while the sum is 55.

The square root of 827799805 is about 28771.5103009905. The cubic root of 827799805 is about 938.9485016724.

The spelling of 827799805 in words is "eight hundred twenty-seven million, seven hundred ninety-nine thousand, eight hundred five".