8318020685 has 16 divisors (see below), whose sum is σ = 10753160880. Its totient is φ = 6140413440.

The previous prime is 8318020637. The next prime is 8318020693. The reversal of 8318020685 is 5860208138.

It can be written as a sum of positive squares in 8 ways, for example, as 866360356 + 7451660329 = 29434^2 + 86323^2 .

It is not a de Polignac number, because 8318020685 - 2¹² = 8318016589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181505 + ... + 222665.

It is an arithmetic number, because the mean of its divisors is an integer number (672072555).

Almost surely, 2^8318020685 is an apocalyptic number.

It is an amenable number.

8318020685 is a deficient number, since it is larger than the sum of its proper divisors (2435140195).

8318020685 is a wasteful number, since it uses less digits than its factorization.

8318020685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44288.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 8318020685 is about 91203.1835244801. The cubic root of 8318020685 is about 2026.1581088703.

The spelling of 8318020685 in words is "eight billion, three hundred eighteen million, twenty thousand, six hundred eighty-five".