61716827 has 2 divisors, whose sum is σ = 61716828. Its totient is φ = 61716826.

The previous prime is 61716799. The next prime is 61716829. The reversal of 61716827 is 72861716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61716827 - 2²⁴ = 44939611 is a prime.

Together with 61716829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61716829) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30858413 + 30858414.

It is an arithmetic number, because the mean of its divisors is an integer number (30858414).

Almost surely, 2^61716827 is an apocalyptic number.

61716827 is a deficient number, since it is larger than the sum of its proper divisors (1).

61716827 is an equidigital number, since it uses as much as digits as its factorization.

61716827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 38.

The square root of 61716827 is about 7856.0057917494. The cubic root of 61716827 is about 395.1856778064.

The spelling of 61716827 in words is "sixty-one million, seven hundred sixteen thousand, eight hundred twenty-seven".