61424819 has 2 divisors, whose sum is σ = 61424820. Its totient is φ = 61424818.

The previous prime is 61424801. The next prime is 61424873. The reversal of 61424819 is 91842416.

It is a happy number.

61424819 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 a de Polignac number, because none of the positive numbers 2^k-61424819 is a prime.

It is a super-2 number, since 2×61424819² = 7546016778365522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61424219) 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, 30712409 + 30712410.

It is an arithmetic number, because the mean of its divisors is an integer number (30712410).

Almost surely, 2^61424819 is an apocalyptic number.

61424819 is a deficient number, since it is larger than the sum of its proper divisors (1).

61424819 is an equidigital number, since it uses as much as digits as its factorization.

61424819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 61424819 is about 7837.3987393778. The cubic root of 61424819 is about 394.5614295929.

The spelling of 61424819 in words is "sixty-one million, four hundred twenty-four thousand, eight hundred nineteen".