61636087 has 2 divisors, whose sum is σ = 61636088. Its totient is φ = 61636086.

The previous prime is 61636027. The next prime is 61636103. The reversal of 61636087 is 78063616.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61636087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61636007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30818043 + 30818044.

It is an arithmetic number, because the mean of its divisors is an integer number (30818044).

Almost surely, 2^61636087 is an apocalyptic number.

61636087 is a deficient number, since it is larger than the sum of its proper divisors (1).

61636087 is an equidigital number, since it uses as much as digits as its factorization.

61636087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 61636087 is about 7850.8653663147. The cubic root of 61636087 is about 395.0132709316.

The spelling of 61636087 in words is "sixty-one million, six hundred thirty-six thousand, eighty-seven".