61879 has 2 divisors, whose sum is σ = 61880. Its totient is φ = 61878.

The previous prime is 61871. The next prime is 61909. The reversal of 61879 is 97816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61879 - 2³ = 61871 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30939 + 30940.

It is an arithmetic number, because the mean of its divisors is an integer number (30940).

2⁶¹⁸⁷⁹ is an apocalyptic number.

61879 is a deficient number, since it is larger than the sum of its proper divisors (1).

61879 is an equidigital number, since it uses as much as digits as its factorization.

61879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 61879 is about 248.7548994492. The cubic root of 61879 is about 39.5531517544.

Subtracting 61879 from its reverse (97816), we obtain a cube (35937 = 33³).

The spelling of 61879 in words is "sixty-one thousand, eight hundred seventy-nine".