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860285081 is a prime number
BaseRepresentation
bin110011010001101…
…110100010011001
32012221210000021102
4303101232202121
53230213110311
6221210521145
730214205525
oct6321564231
92187700242
10860285081
11401676a07
122001361b5
131092cc836
148237cd85
15507d443b
hex3346e899

860285081 has 2 divisors, whose sum is σ = 860285082. Its totient is φ = 860285080.

The previous prime is 860285057. The next prime is 860285089. The reversal of 860285081 is 180582068.

860285081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 634233856 + 226051225 = 25184^2 + 15035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-860285081 is a prime.

It is a super-2 number, since 2×8602850812 = 1480180841182353122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (860285089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430142540 + 430142541.

It is an arithmetic number, because the mean of its divisors is an integer number (430142541).

Almost surely, 2860285081 is an apocalyptic number.

It is an amenable number.

860285081 is a deficient number, since it is larger than the sum of its proper divisors (1).

860285081 is an equidigital number, since it uses as much as digits as its factorization.

860285081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 860285081 is about 29330.6167851956. The cubic root of 860285081 is about 951.0736084036.

The spelling of 860285081 in words is "eight hundred sixty million, two hundred eighty-five thousand, eighty-one".