36865661 has 8 divisors (see below), whose sum is σ = 42173184. Its totient is φ = 31568400.

The previous prime is 36865649. The next prime is 36865667. The reversal of 36865661 is 16656863.

36865661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36865661 - 2⁶ = 36865597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36865667) 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 7 ways as a sum of consecutive naturals, for example, 8111 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (5271648).

Almost surely, 2^36865661 is an apocalyptic number.

It is an amenable number.

36865661 is a deficient number, since it is larger than the sum of its proper divisors (5307523).

36865661 is a wasteful number, since it uses less digits than its factorization.

36865661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131.

The product of its digits is 155520, while the sum is 41.

The square root of 36865661 is about 6071.7098909615. The cubic root of 36865661 is about 332.8184101943.

The spelling of 36865661 in words is "thirty-six million, eight hundred sixty-five thousand, six hundred sixty-one".