61100863 has 2 divisors, whose sum is σ = 61100864. Its totient is φ = 61100862.

The previous prime is 61100861. The next prime is 61100867. The reversal of 61100863 is 36800116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61100863 - 2¹ = 61100861 is a prime.

Together with 61100861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61100861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30550431 + 30550432.

It is an arithmetic number, because the mean of its divisors is an integer number (30550432).

Almost surely, 2^61100863 is an apocalyptic number.

61100863 is a deficient number, since it is larger than the sum of its proper divisors (1).

61100863 is an equidigital number, since it uses as much as digits as its factorization.

61100863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 61100863 is about 7816.7041008343. The cubic root of 61100863 is about 393.8665643639.

Adding to 61100863 its reverse (36800116), we get a palindrome (97900979).

The spelling of 61100863 in words is "sixty-one million, one hundred thousand, eight hundred sixty-three".