861163 has 2 divisors, whose sum is σ = 861164. Its totient is φ = 861162.

The previous prime is 861139. The next prime is 861167. The reversal of 861163 is 361168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861163 - 2⁵ = 861131 is a prime.

861163 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (861167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430581 + 430582.

It is an arithmetic number, because the mean of its divisors is an integer number (430582).

2⁸⁶¹¹⁶³ is an apocalyptic number.

861163 is a deficient number, since it is larger than the sum of its proper divisors (1).

861163 is an equidigital number, since it uses as much as digits as its factorization.

861163 is an evil number, because the sum of its binary digits is even.

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

The square root of 861163 is about 927.9886852758. The cubic root of 861163 is about 95.1397021244.

It can be divided in two parts, 861 and 163, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 861163 in words is "eight hundred sixty-one thousand, one hundred sixty-three".