61610071 has 2 divisors, whose sum is σ = 61610072. Its totient is φ = 61610070.

The previous prime is 61610053. The next prime is 61610083. The reversal of 61610071 is 17001616.

61610071 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 is a cyclic number.

It is not a de Polignac number, because 61610071 - 2¹³ = 61601879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61610011) 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, 30805035 + 30805036.

It is an arithmetic number, because the mean of its divisors is an integer number (30805036).

Almost surely, 2^61610071 is an apocalyptic number.

61610071 is a deficient number, since it is larger than the sum of its proper divisors (1).

61610071 is an equidigital number, since it uses as much as digits as its factorization.

61610071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 61610071 is about 7849.2083040266. The cubic root of 61610071 is about 394.9576860084.

Adding to 61610071 its reverse (17001616), we get a palindrome (78611687).

The spelling of 61610071 in words is "sixty-one million, six hundred ten thousand, seventy-one".