36645640 has 16 divisors (see below), whose sum is σ = 82452780. Its totient is φ = 14658240.

The previous prime is 36645619. The next prime is 36645641. The reversal of 36645640 is 4654663.

It can be written as a sum of positive squares in 2 ways, for example, as 36505764 + 139876 = 6042^2 + 374^2 .

It is a junction number, because it is equal to n+sod(n) for n = 36645596 and 36645605.

It is not an unprimeable number, because it can be changed into a prime (36645641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458031 + ... + 458110.

Almost surely, 2^36645640 is an apocalyptic number.

It is an amenable number.

36645640 is an abundant number, since it is smaller than the sum of its proper divisors (45807140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36645640 is a wasteful number, since it uses less digits than its factorization.

36645640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916152 (or 916148 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 36645640 is about 6053.5642393552. The cubic root of 36645640 is about 332.1549815922.

The spelling of 36645640 in words is "thirty-six million, six hundred forty-five thousand, six hundred forty".