632561 has 2 divisors, whose sum is σ = 632562. Its totient is φ = 632560.

The previous prime is 632557. The next prime is 632591. The reversal of 632561 is 165236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516961 + 115600 = 719^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 632561 - 2² = 632557 is a prime.

It is a Chen prime.

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

It is not a weakly prime, because it can be changed into another prime (632501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316280 + 316281.

It is an arithmetic number, because the mean of its divisors is an integer number (316281).

2⁶³²⁵⁶¹ is an apocalyptic number.

It is an amenable number.

632561 is a deficient number, since it is larger than the sum of its proper divisors (1).

632561 is an equidigital number, since it uses as much as digits as its factorization.

632561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 632561 is about 795.3370354762. The cubic root of 632561 is about 85.8421930298.

Adding to 632561 its reverse (165236), we get a palindrome (797797).

The spelling of 632561 in words is "six hundred thirty-two thousand, five hundred sixty-one".