8205739085 has 8 divisors (see below), whose sum is σ = 9971531520. Its totient is φ = 6481494864.

The previous prime is 8205739067. The next prime is 8205739103. The reversal of 8205739085 is 5809375028.

It is an interprime number because it is at equal distance from previous prime (8205739067) and next prime (8205739103).

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 8205739085 - 2¹⁰ = 8205738061 is a prime.

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, 10386617 + ... + 10387406.

It is an arithmetic number, because the mean of its divisors is an integer number (1246441440).

Almost surely, 2^8205739085 is an apocalyptic number.

It is an amenable number.

8205739085 is a deficient number, since it is larger than the sum of its proper divisors (1765792435).

8205739085 is a wasteful number, since it uses less digits than its factorization.

8205739085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20774107.

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 8205739085 is about 90585.5346343995. The cubic root of 8205739085 is about 2017.0000140927. Note that the first 4 decimals are identical.

The spelling of 8205739085 in words is "eight billion, two hundred five million, seven hundred thirty-nine thousand, eighty-five".