3607561 has 2 divisors, whose sum is σ = 3607562. Its totient is φ = 3607560.

The previous prime is 3607547. The next prime is 3607567. The reversal of 3607561 is 1657063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3171961 + 435600 = 1781^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 3607561 - 2⁷ = 3607433 is a prime.

It is not a weakly prime, because it can be changed into another prime (3607567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1803780 + 1803781.

It is an arithmetic number, because the mean of its divisors is an integer number (1803781).

Almost surely, 2^3607561 is an apocalyptic number.

It is an amenable number.

3607561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3607561 is an equidigital number, since it uses as much as digits as its factorization.

3607561 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3607561 is about 1899.3580494472. The cubic root of 3607561 is about 153.3691089595.

It can be divided in two parts, 360 and 7561, that added together give a square (7921 = 89²).

The spelling of 3607561 in words is "three million, six hundred seven thousand, five hundred sixty-one".