36865640 has 64 divisors (see below), whose sum is σ = 96768000. Its totient is φ = 12634944.

The previous prime is 36865637. The next prime is 36865649. The reversal of 36865640 is 4656863.

It is a junction number, because it is equal to n+sod(n) for n = 36865594 and 36865603.

It is not an unprimeable number, because it can be changed into a prime (36865649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12377 + ... + 15063.

It is an arithmetic number, because the mean of its divisors is an integer number (1512000).

Almost surely, 2^36865640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36865640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48384000).

36865640 is an abundant number, since it is smaller than the sum of its proper divisors (59902360).

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

36865640 is a wasteful number, since it uses less digits than its factorization.

36865640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719 (or 2701 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 36865640 is about 6071.7081616296. The cubic root of 36865640 is about 332.8183469992.

The spelling of 36865640 in words is "thirty-six million, eight hundred sixty-five thousand, six hundred forty".