61085329 has 2 divisors, whose sum is σ = 61085330. Its totient is φ = 61085328.

The previous prime is 61085317. The next prime is 61085333. The reversal of 61085329 is 92358016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30780304 + 30305025 = 5548^2 + 5505^2 .

It is a cyclic number.

It is not a de Polignac number, because 61085329 - 2²⁵ = 27530897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61085294 and 61085303.

It is not a weakly prime, because it can be changed into another prime (61085359) 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, 30542664 + 30542665.

It is an arithmetic number, because the mean of its divisors is an integer number (30542665).

Almost surely, 2^61085329 is an apocalyptic number.

It is an amenable number.

61085329 is a deficient number, since it is larger than the sum of its proper divisors (1).

61085329 is an equidigital number, since it uses as much as digits as its factorization.

61085329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 61085329 is about 7815.7103963747. The cubic root of 61085329 is about 393.8331832654.

The spelling of 61085329 in words is "sixty-one million, eighty-five thousand, three hundred twenty-nine".