36721771 has 2 divisors, whose sum is σ = 36721772. Its totient is φ = 36721770.

The previous prime is 36721757. The next prime is 36721787. The reversal of 36721771 is 17712763.

It is a weak prime.

It is an emirp because it is prime and its reverse (17712763) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36721771 - 2⁹ = 36721259 is a prime.

It is not a weakly prime, because it can be changed into another prime (36721171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18360885 + 18360886.

It is an arithmetic number, because the mean of its divisors is an integer number (18360886).

Almost surely, 2^36721771 is an apocalyptic number.

36721771 is a deficient number, since it is larger than the sum of its proper divisors (1).

36721771 is an equidigital number, since it uses as much as digits as its factorization.

36721771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12348, while the sum is 34.

The square root of 36721771 is about 6059.8490905302. The cubic root of 36721771 is about 332.3848388568.

The spelling of 36721771 in words is "thirty-six million, seven hundred twenty-one thousand, seven hundred seventy-one".