3604101661 has 4 divisors (see below), whose sum is σ = 3701509852. Its totient is φ = 3506693472.

The previous prime is 3604101653. The next prime is 3604101667. The reversal of 3604101661 is 1661014063.

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 2357588025 + 1246513636 = 48555^2 + 35306^2 .

It is a cyclic number.

It is not a de Polignac number, because 3604101661 - 2³ = 3604101653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3604101667) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48704040 + ... + 48704113.

It is an arithmetic number, because the mean of its divisors is an integer number (925377463).

Almost surely, 2^3604101661 is an apocalyptic number.

It is an amenable number.

3604101661 is a deficient number, since it is larger than the sum of its proper divisors (97408191).

3604101661 is an equidigital number, since it uses as much as digits as its factorization.

3604101661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97408190.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 3604101661 is about 60034.1707779828. The cubic root of 3604101661 is about 1533.2007071121.

The spelling of 3604101661 in words is "three billion, six hundred four million, one hundred one thousand, six hundred sixty-one".