61879943 has 2 divisors, whose sum is σ = 61879944. Its totient is φ = 61879942.

The previous prime is 61879933. The next prime is 61879957. The reversal of 61879943 is 34997816.

61879943 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 61879943 - 2⁶ = 61879879 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 (61879933) 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, 30939971 + 30939972.

It is an arithmetic number, because the mean of its divisors is an integer number (30939972).

Almost surely, 2^61879943 is an apocalyptic number.

61879943 is a deficient number, since it is larger than the sum of its proper divisors (1).

61879943 is an equidigital number, since it uses as much as digits as its factorization.

61879943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 61879943 is about 7866.3805527066. The cubic root of 61879943 is about 395.5335267573.

The spelling of 61879943 in words is "sixty-one million, eight hundred seventy-nine thousand, nine hundred forty-three".