61936939 has 2 divisors, whose sum is σ = 61936940. Its totient is φ = 61936938.

The previous prime is 61936883. The next prime is 61936949. The reversal of 61936939 is 93963916.

61936939 is nontrivially palindromic in base 8.

61936939 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 61936939 - 2¹¹ = 61934891 is a prime.

It is not a weakly prime, because it can be changed into another prime (61936949) 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, 30968469 + 30968470.

It is an arithmetic number, because the mean of its divisors is an integer number (30968470).

Almost surely, 2^61936939 is an apocalyptic number.

61936939 is a deficient number, since it is larger than the sum of its proper divisors (1).

61936939 is an equidigital number, since it uses as much as digits as its factorization.

61936939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 236196, while the sum is 46.

The square root of 61936939 is about 7870.0024777633. The cubic root of 61936939 is about 395.6549280269.

The spelling of 61936939 in words is "sixty-one million, nine hundred thirty-six thousand, nine hundred thirty-nine".