61836893 has 2 divisors, whose sum is σ = 61836894. Its totient is φ = 61836892.

The previous prime is 61836889. The next prime is 61836917. The reversal of 61836893 is 39863816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52461049 + 9375844 = 7243^2 + 3062^2 .

It is a cyclic number.

It is not a de Polignac number, because 61836893 - 2² = 61836889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61830893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30918446 + 30918447.

It is an arithmetic number, because the mean of its divisors is an integer number (30918447).

Almost surely, 2^61836893 is an apocalyptic number.

It is an amenable number.

61836893 is a deficient number, since it is larger than the sum of its proper divisors (1).

61836893 is an equidigital number, since it uses as much as digits as its factorization.

61836893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 61836893 is about 7863.6437482887. The cubic root of 61836893 is about 395.4417809898.

The spelling of 61836893 in words is "sixty-one million, eight hundred thirty-six thousand, eight hundred ninety-three".