3661061 has 4 divisors (see below), whose sum is σ = 3678624. Its totient is φ = 3643500.

The previous prime is 3661043. The next prime is 3661093. The reversal of 3661061 is 1601663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3661061 - 2¹⁰ = 3660037 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 (3661561) 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 in 3 ways as a sum of consecutive naturals, for example, 8465 + ... + 8886.

It is an arithmetic number, because the mean of its divisors is an integer number (919656).

Almost surely, 2^3661061 is an apocalyptic number.

It is an amenable number.

3661061 is a deficient number, since it is larger than the sum of its proper divisors (17563).

3661061 is a wasteful number, since it uses less digits than its factorization.

3661061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17562.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 3661061 is about 1913.3899236695. The cubic root of 3661061 is about 154.1235445338.

The spelling of 3661061 in words is "three million, six hundred sixty-one thousand, sixty-one".