3643061 has 4 divisors (see below), whose sum is σ = 3711852. Its totient is φ = 3574272.

The previous prime is 3643043. The next prime is 3643063. The reversal of 3643061 is 1603463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1603463 = 79 ⋅20297.

It can be written as a sum of positive squares in 2 ways, for example, as 1874161 + 1768900 = 1369^2 + 1330^2 .

It is a cyclic number.

It is not a de Polignac number, because 3643061 - 2¹⁴ = 3626677 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 (3643063) 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, 34316 + ... + 34421.

It is an arithmetic number, because the mean of its divisors is an integer number (927963).

Almost surely, 2^3643061 is an apocalyptic number.

It is an amenable number.

3643061 is a deficient number, since it is larger than the sum of its proper divisors (68791).

3643061 is an equidigital number, since it uses as much as digits as its factorization.

3643061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68790.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 3643061 is about 1908.6804342267. The cubic root of 3643061 is about 153.8705411148.

The spelling of 3643061 in words is "three million, six hundred forty-three thousand, sixty-one".