3661603201 has 4 divisors (see below), whose sum is σ = 3702744900. Its totient is φ = 3620461504.

The previous prime is 3661603199. The next prime is 3661603217. The reversal of 3661603201 is 1023061663.

3661603201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 924220801 + 2737382400 = 30401^2 + 52320^2 .

It is a cyclic number.

It is not a de Polignac number, because 3661603201 - 2¹ = 3661603199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3661603201.

It is not an unprimeable number, because it can be changed into a prime (3661603261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20570716 + ... + 20570893.

It is an arithmetic number, because the mean of its divisors is an integer number (925686225).

Almost surely, 2^3661603201 is an apocalyptic number.

It is an amenable number.

3661603201 is a deficient number, since it is larger than the sum of its proper divisors (41141699).

3661603201 is an equidigital number, since it uses as much as digits as its factorization.

3661603201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41141698.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3661603201 is about 60511.1824458918. The cubic root of 3661603201 is about 1541.3115269394.

Adding to 3661603201 its reverse (1023061663), we get a palindrome (4684664864).

The spelling of 3661603201 in words is "three billion, six hundred sixty-one million, six hundred three thousand, two hundred one".