61800833 has 2 divisors, whose sum is σ = 61800834. Its totient is φ = 61800832.

The previous prime is 61800803. The next prime is 61800853. The reversal of 61800833 is 33800816.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51739249 + 10061584 = 7193^2 + 3172^2 .

It is a cyclic number.

It is not a de Polignac number, because 61800833 - 2¹⁰ = 61799809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61800796 and 61800805.

It is not a weakly prime, because it can be changed into another prime (61800803) 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, 30900416 + 30900417.

It is an arithmetic number, because the mean of its divisors is an integer number (30900417).

Almost surely, 2^61800833 is an apocalyptic number.

It is an amenable number.

61800833 is a deficient number, since it is larger than the sum of its proper divisors (1).

61800833 is an equidigital number, since it uses as much as digits as its factorization.

61800833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 61800833 is about 7861.3505837102. The cubic root of 61800833 is about 395.3648991444.

The spelling of 61800833 in words is "sixty-one million, eight hundred thousand, eight hundred thirty-three".