3640056 has 64 divisors (see below), whose sum is σ = 10644480. Its totient is φ = 1015680.

The previous prime is 3640037. The next prime is 3640061. The reversal of 3640056 is 6500463.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7666 + ... + 8126.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

Almost surely, 2^3640056 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 3640056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5322240).

3640056 is an abundant number, since it is smaller than the sum of its proper divisors (7004424).

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

3640056 is a wasteful number, since it uses less digits than its factorization.

3640056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 3640056 is about 1907.8930787652. The cubic root of 3640056 is about 153.8282224742.

The spelling of 3640056 in words is "three million, six hundred forty thousand, fifty-six".