61727693 has 2 divisors, whose sum is σ = 61727694. Its totient is φ = 61727692.

The previous prime is 61727639. The next prime is 61727707. The reversal of 61727693 is 39672716.

Together with previous prime (61727639) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40170244 + 21557449 = 6338^2 + 4643^2 .

It is a cyclic number.

It is not a de Polignac number, because 61727693 - 2¹⁰ = 61726669 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61727693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61727893) 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, 30863846 + 30863847.

It is an arithmetic number, because the mean of its divisors is an integer number (30863847).

Almost surely, 2^61727693 is an apocalyptic number.

It is an amenable number.

61727693 is a deficient number, since it is larger than the sum of its proper divisors (1).

61727693 is an equidigital number, since it uses as much as digits as its factorization.

61727693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 41.

The square root of 61727693 is about 7856.6973341220. The cubic root of 61727693 is about 395.2088688647.

The spelling of 61727693 in words is "sixty-one million, seven hundred twenty-seven thousand, six hundred ninety-three".