2205397685 has 8 divisors (see below), whose sum is σ = 2702785536. Its totient is φ = 1726779280.

The previous prime is 2205397679. The next prime is 2205397741. The reversal of 2205397685 is 5867935022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2205397685 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4692101 + ... + 4692570.

It is an arithmetic number, because the mean of its divisors is an integer number (337848192).

Almost surely, 2^2205397685 is an apocalyptic number.

It is an amenable number.

2205397685 is a deficient number, since it is larger than the sum of its proper divisors (497387851).

2205397685 is an equidigital number, since it uses as much as digits as its factorization.

2205397685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9384723.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 2205397685 is about 46961.6618636947. The cubic root of 2205397685 is about 1301.6542422200.

The spelling of 2205397685 in words is "two billion, two hundred five million, three hundred ninety-seven thousand, six hundred eighty-five".