36661841 has 4 divisors (see below), whose sum is σ = 37164132. Its totient is φ = 36159552.

The previous prime is 36661837. The next prime is 36661861. The reversal of 36661841 is 14816663.

36661841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14816663 = 1171 ⋅12653.

It can be written as a sum of positive squares in 2 ways, for example, as 28047616 + 8614225 = 5296^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 36661841 - 2² = 36661837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36661861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251036 + ... + 251181.

It is an arithmetic number, because the mean of its divisors is an integer number (9291033).

Almost surely, 2^36661841 is an apocalyptic number.

It is an amenable number.

36661841 is a deficient number, since it is larger than the sum of its proper divisors (502291).

36661841 is an equidigital number, since it uses as much as digits as its factorization.

36661841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502290.

The product of its digits is 20736, while the sum is 35.

The square root of 36661841 is about 6054.9022287730. The cubic root of 36661841 is about 332.2039228400.

The spelling of 36661841 in words is "thirty-six million, six hundred sixty-one thousand, eight hundred forty-one".