61662529 has 2 divisors, whose sum is σ = 61662530. Its totient is φ = 61662528.

The previous prime is 61662487. The next prime is 61662533. The reversal of 61662529 is 92526616.

61662529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36180225 + 25482304 = 6015^2 + 5048^2 .

It is a cyclic number.

It is not a de Polignac number, because 61662529 - 2¹¹ = 61660481 is a prime.

It is not a weakly prime, because it can be changed into another prime (61662569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30831264 + 30831265.

It is an arithmetic number, because the mean of its divisors is an integer number (30831265).

Almost surely, 2^61662529 is an apocalyptic number.

It is an amenable number.

61662529 is a deficient number, since it is larger than the sum of its proper divisors (1).

61662529 is an equidigital number, since it uses as much as digits as its factorization.

61662529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 61662529 is about 7852.5492039210. The cubic root of 61662529 is about 395.0697500071.

The spelling of 61662529 in words is "sixty-one million, six hundred sixty-two thousand, five hundred twenty-nine".