36649665 has 40 divisors (see below), whose sum is σ = 70761768. Its totient is φ = 18040320.

The previous prime is 36649661. The next prime is 36649687. The reversal of 36649665 is 56694663.

36649665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2742336 + 33907329 = 1656^2 + 5823^2 .

It is not a de Polignac number, because 36649665 - 2² = 36649661 is a prime.

It is a super-2 number, since 2×36649665² = 2686395889224450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 36649665.

It is not an unprimeable number, because it can be changed into a prime (36649661) 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 39 ways as a sum of consecutive naturals, for example, 1785 + ... + 8745.

Almost surely, 2^36649665 is an apocalyptic number.

It is an amenable number.

36649665 is a deficient number, since it is larger than the sum of its proper divisors (34112103).

36649665 is a wasteful number, since it uses less digits than its factorization.

36649665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991 (or 6982 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 36649665 is about 6053.8966789994. The cubic root of 36649665 is about 332.1671419734.

The spelling of 36649665 in words is "thirty-six million, six hundred forty-nine thousand, six hundred sixty-five".