34636561 has 2 divisors, whose sum is σ = 34636562. Its totient is φ = 34636560.

The previous prime is 34636549. The next prime is 34636571. The reversal of 34636561 is 16563643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30735936 + 3900625 = 5544^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 34636561 - 2¹⁷ = 34505489 is a prime.

It is not a weakly prime, because it can be changed into another prime (34636501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17318280 + 17318281.

It is an arithmetic number, because the mean of its divisors is an integer number (17318281).

Almost surely, 2^34636561 is an apocalyptic number.

It is an amenable number.

34636561 is a deficient number, since it is larger than the sum of its proper divisors (1).

34636561 is an equidigital number, since it uses as much as digits as its factorization.

34636561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 34636561 is about 5885.2834256304. The cubic root of 34636561 is about 325.9704672959.

The spelling of 34636561 in words is "thirty-four million, six hundred thirty-six thousand, five hundred sixty-one".