3661361 has 4 divisors (see below), whose sum is σ = 3994224. Its totient is φ = 3328500.

The previous prime is 3661327. The next prime is 3661367. The reversal of 3661361 is 1631663.

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 a de Polignac number, because none of the positive numbers 2^k-3661361 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 3661361.

It is not an unprimeable number, because it can be changed into a prime (3661367) 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, 166415 + ... + 166436.

It is an arithmetic number, because the mean of its divisors is an integer number (998556).

Almost surely, 2^3661361 is an apocalyptic number.

It is an amenable number.

3661361 is a deficient number, since it is larger than the sum of its proper divisors (332863).

3661361 is a wasteful number, since it uses less digits than its factorization.

3661361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332862.

The product of its digits is 1944, while the sum is 26.

The square root of 3661361 is about 1913.4683169575. The cubic root of 3661361 is about 154.1277542243.

The spelling of 3661361 in words is "three million, six hundred sixty-one thousand, three hundred sixty-one".