61436663 has 2 divisors, whose sum is σ = 61436664. Its totient is φ = 61436662.

The previous prime is 61436653. The next prime is 61436677. The reversal of 61436663 is 36663416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61436663 - 2⁸ = 61436407 is a prime.

It is a Sophie Germain 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 (61436603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30718331 + 30718332.

It is an arithmetic number, because the mean of its divisors is an integer number (30718332).

Almost surely, 2^61436663 is an apocalyptic number.

61436663 is a deficient number, since it is larger than the sum of its proper divisors (1).

61436663 is an equidigital number, since it uses as much as digits as its factorization.

61436663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 35.

The square root of 61436663 is about 7838.1543108056. The cubic root of 61436663 is about 394.5867878836.

The spelling of 61436663 in words is "sixty-one million, four hundred thirty-six thousand, six hundred sixty-three".