61888933 has 2 divisors, whose sum is σ = 61888934. Its totient is φ = 61888932.

The previous prime is 61888921. The next prime is 61888943. The reversal of 61888933 is 33988816.

61888933 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., 60559524 + 1329409 = 7782^2 + 1153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61888933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61888943) 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, 30944466 + 30944467.

It is an arithmetic number, because the mean of its divisors is an integer number (30944467).

Almost surely, 2^61888933 is an apocalyptic number.

It is an amenable number.

61888933 is a deficient number, since it is larger than the sum of its proper divisors (1).

61888933 is an equidigital number, since it uses as much as digits as its factorization.

61888933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The square root of 61888933 is about 7866.9519510418. The cubic root of 61888933 is about 395.5526803745.

The spelling of 61888933 in words is "sixty-one million, eight hundred eighty-eight thousand, nine hundred thirty-three".