1806061 has 2 divisors, whose sum is σ = 1806062. Its totient is φ = 1806060.

The previous prime is 1806059. The next prime is 1806089. The reversal of 1806061 is 1606081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1550025 + 256036 = 1245^2 + 506^2 .

It is an emirp because it is prime and its reverse (1606081) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1909081 and 1809091.

It is a cyclic number.

It is not a de Polignac number, because 1806061 - 2¹ = 1806059 is a prime.

It is a super-3 number, since 3×1806061³ = 17673334546645814943, which contains 333 as substring.

Together with 1806059, it forms a pair of twin primes.

It is equal to p₁₃₅₄₉₀ and since 1806061 and 135490 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1806001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903030 + 903031.

It is an arithmetic number, because the mean of its divisors is an integer number (903031).

2^1806061 is an apocalyptic number.

It is an amenable number.

1806061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806061 is an equidigital number, since it uses as much as digits as its factorization.

1806061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1806061 is about 1343.8976895582. The cubic root of 1806061 is about 121.7804211220.

It can be divided in two parts, 180 and 6061, that added together give a square (6241 = 79²).

The spelling of 1806061 in words is "one million, eight hundred six thousand, sixty-one".