36067781 has 2 divisors, whose sum is σ = 36067782. Its totient is φ = 36067780.

The previous prime is 36067751. The next prime is 36067783. The reversal of 36067781 is 18776063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27394756 + 8673025 = 5234^2 + 2945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36067781 is a prime.

It is a super-2 number, since 2×36067781² = 2601769652527922, which contains 22 as substring.

Together with 36067783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36067783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18033890 + 18033891.

It is an arithmetic number, because the mean of its divisors is an integer number (18033891).

Almost surely, 2^36067781 is an apocalyptic number.

It is an amenable number.

36067781 is a deficient number, since it is larger than the sum of its proper divisors (1).

36067781 is an equidigital number, since it uses as much as digits as its factorization.

36067781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 36067781 is about 6005.6457604491. The cubic root of 36067781 is about 330.3998245333.

The spelling of 36067781 in words is "thirty-six million, sixty-seven thousand, seven hundred eighty-one".