3670561 has 2 divisors, whose sum is σ = 3670562. Its totient is φ = 3670560.

The previous prime is 3670549. The next prime is 3670571. The reversal of 3670561 is 1650763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3534400 + 136161 = 1880^2 + 369^2 .

It is an emirp because it is prime and its reverse (1650763) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3670561 - 2⁹ = 3670049 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (3670571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1835280 + 1835281.

It is an arithmetic number, because the mean of its divisors is an integer number (1835281).

Almost surely, 2^3670561 is an apocalyptic number.

It is an amenable number.

3670561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3670561 is an equidigital number, since it uses as much as digits as its factorization.

3670561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 3670561 is about 1915.8708202799. The cubic root of 3670561 is about 154.2567398967.

The spelling of 3670561 in words is "three million, six hundred seventy thousand, five hundred sixty-one".