61604219 has 2 divisors, whose sum is σ = 61604220. Its totient is φ = 61604218.

The previous prime is 61604203. The next prime is 61604227. The reversal of 61604219 is 91240616.

61604219 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 is a cyclic number.

It is not a de Polignac number, because 61604219 - 2⁴ = 61604203 is a prime.

It is a super-2 number, since 2×61604219² = 7590159597199922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 61604191 and 61604200.

It is not a weakly prime, because it can be changed into another prime (61604269) 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, 30802109 + 30802110.

It is an arithmetic number, because the mean of its divisors is an integer number (30802110).

Almost surely, 2^61604219 is an apocalyptic number.

61604219 is a deficient number, since it is larger than the sum of its proper divisors (1).

61604219 is an equidigital number, since it uses as much as digits as its factorization.

61604219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 61604219 is about 7848.8355187251. The cubic root of 61604219 is about 394.9451806635.

The spelling of 61604219 in words is "sixty-one million, six hundred four thousand, two hundred nineteen".