3611563 has 2 divisors, whose sum is σ = 3611564. Its totient is φ = 3611562.

The previous prime is 3611561. The next prime is 3611603. The reversal of 3611563 is 3651163.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3611563 - 2¹ = 3611561 is a prime.

Together with 3611561, it forms a pair of twin primes.

It is equal to p₂₅₇₅₂₄ and since 3611563 and 257524 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (3611561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805781 + 1805782.

It is an arithmetic number, because the mean of its divisors is an integer number (1805782).

Almost surely, 2^3611563 is an apocalyptic number.

3611563 is a deficient number, since it is larger than the sum of its proper divisors (1).

3611563 is an equidigital number, since it uses as much as digits as its factorization.

3611563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 25.

The square root of 3611563 is about 1900.4112712779. The cubic root of 3611563 is about 153.4258006643.

The spelling of 3611563 in words is "three million, six hundred eleven thousand, five hundred sixty-three".