2205665536 has 18 divisors (see below), whose sum is σ = 4402715702. Its totient is φ = 1102832640.

The previous prime is 2205665519. The next prime is 2205665537. The reversal of 2205665536 is 6355665022.

It can be written as a sum of positive squares in only one way, i.e., 1119303936 + 1086361600 = 33456^2 + 32960^2 .

It is not an unprimeable number, because it can be changed into a prime (2205665537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4307685 + ... + 4308196.

Almost surely, 2^2205665536 is an apocalyptic number.

It is an amenable number.

2205665536 is a deficient number, since it is larger than the sum of its proper divisors (2197050166).

2205665536 is an frugal number, since it uses more digits than its factorization.

2205665536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8615897 (or 8615883 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 40.

The square root of 2205665536 is about 46964.5135820653. The cubic root of 2205665536 is about 1301.7069364618.

The spelling of 2205665536 in words is "two billion, two hundred five million, six hundred sixty-five thousand, five hundred thirty-six".