61800803 has 2 divisors, whose sum is σ = 61800804. Its totient is φ = 61800802.

The previous prime is 61800779. The next prime is 61800833. The reversal of 61800803 is 30800816.

61800803 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 61800803 - 2⁸ = 61800547 is a prime.

It is not a weakly prime, because it can be changed into another prime (61800833) 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, 30900401 + 30900402.

It is an arithmetic number, because the mean of its divisors is an integer number (30900402).

Almost surely, 2^61800803 is an apocalyptic number.

61800803 is a deficient number, since it is larger than the sum of its proper divisors (1).

61800803 is an equidigital number, since it uses as much as digits as its factorization.

61800803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 61800803 is about 7861.3486756408. The cubic root of 61800803 is about 395.3648351704.

The spelling of 61800803 in words is "sixty-one million, eight hundred thousand, eight hundred three".