61885379 has 2 divisors, whose sum is σ = 61885380. Its totient is φ = 61885378.

The previous prime is 61885339. The next prime is 61885459. The reversal of 61885379 is 97358816.

It is a happy number.

61885379 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 61885379 - 2⁸ = 61885123 is a prime.

It is not a weakly prime, because it can be changed into another prime (61885319) 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, 30942689 + 30942690.

It is an arithmetic number, because the mean of its divisors is an integer number (30942690).

Almost surely, 2^61885379 is an apocalyptic number.

61885379 is a deficient number, since it is larger than the sum of its proper divisors (1).

61885379 is an equidigital number, since it uses as much as digits as its factorization.

61885379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 61885379 is about 7866.7260661599. The cubic root of 61885379 is about 395.5451086323.

The spelling of 61885379 in words is "sixty-one million, eight hundred eighty-five thousand, three hundred seventy-nine".