36561671 has 4 divisors (see below), whose sum is σ = 36574032. Its totient is φ = 36549312.

The previous prime is 36561599. The next prime is 36561677. The reversal of 36561671 is 17616563.

It is a happy number.

36561671 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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36561671 - 2²² = 32367367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36561677) 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, 1175 + ... + 8631.

It is an arithmetic number, because the mean of its divisors is an integer number (9143508).

Almost surely, 2^36561671 is an apocalyptic number.

36561671 is a deficient number, since it is larger than the sum of its proper divisors (12361).

36561671 is an equidigital number, since it uses as much as digits as its factorization.

36561671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12360.

The product of its digits is 22680, while the sum is 35.

The square root of 36561671 is about 6046.6247609720. The cubic root of 36561671 is about 331.9010900739.

The spelling of 36561671 in words is "thirty-six million, five hundred sixty-one thousand, six hundred seventy-one".