36661665 has 8 divisors (see below), whose sum is σ = 58658688. Its totient is φ = 19552880.

The previous prime is 36661661. The next prime is 36661679. The reversal of 36661665 is 56616663.

36661665 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 not a de Polignac number, because 36661665 - 2² = 36661661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36661661) 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, 1222041 + ... + 1222070.

It is an arithmetic number, because the mean of its divisors is an integer number (7332336).

Almost surely, 2^36661665 is an apocalyptic number.

It is an amenable number.

36661665 is a deficient number, since it is larger than the sum of its proper divisors (21997023).

36661665 is a wasteful number, since it uses less digits than its factorization.

36661665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444119.

The product of its digits is 116640, while the sum is 39.

The square root of 36661665 is about 6054.8876950774. The cubic root of 36661665 is about 332.2033912429.

The spelling of 36661665 in words is "thirty-six million, six hundred sixty-one thousand, six hundred sixty-five".