61606247 has 2 divisors, whose sum is σ = 61606248. Its totient is φ = 61606246.

The previous prime is 61606243. The next prime is 61606273. The reversal of 61606247 is 74260616.

61606247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61606247 - 2² = 61606243 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 (61606243) 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, 30803123 + 30803124.

It is an arithmetic number, because the mean of its divisors is an integer number (30803124).

Almost surely, 2^61606247 is an apocalyptic number.

61606247 is a deficient number, since it is larger than the sum of its proper divisors (1).

61606247 is an equidigital number, since it uses as much as digits as its factorization.

61606247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 61606247 is about 7848.9647088008. The cubic root of 61606247 is about 394.9495144578.

The spelling of 61606247 in words is "sixty-one million, six hundred six thousand, two hundred forty-seven".