3605575681 has 2 divisors, whose sum is σ = 3605575682. Its totient is φ = 3605575680.

The previous prime is 3605575607. The next prime is 3605575697. The reversal of 3605575681 is 1865755063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1925805456 + 1679770225 = 43884^2 + 40985^2 .

It is an emirp because it is prime and its reverse (1865755063) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3605575681 - 2⁷ = 3605575553 is a prime.

It is a super-2 number, since 2×3605575681² = 26000351982837227522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3605575601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1802787840 + 1802787841.

It is an arithmetic number, because the mean of its divisors is an integer number (1802787841).

Almost surely, 2^3605575681 is an apocalyptic number.

It is an amenable number.

3605575681 is a deficient number, since it is larger than the sum of its proper divisors (1).

3605575681 is an equidigital number, since it uses as much as digits as its factorization.

3605575681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 46.

The square root of 3605575681 is about 60046.4460313847. The cubic root of 3605575681 is about 1533.4096968217.

The spelling of 3605575681 in words is "three billion, six hundred five million, five hundred seventy-five thousand, six hundred eighty-one".