3640756 has 12 divisors (see below), whose sum is σ = 7281568. Its totient is φ = 1560312.

The previous prime is 3640753. The next prime is 3640781. The reversal of 3640756 is 6570463.

3640756 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640753) 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 3 ways as a sum of consecutive naturals, for example, 64986 + ... + 65041.

Almost surely, 2^3640756 is an apocalyptic number.

It is an amenable number.

3640756 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3640756 is a wasteful number, since it uses less digits than its factorization.

3640756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130038 (or 130036 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 3640756 is about 1908.0765183818. The cubic root of 3640756 is about 153.8380824740.

It can be divided in two parts, 36407 and 56, that added together give a palindrome (36463).

The spelling of 3640756 in words is "three million, six hundred forty thousand, seven hundred fifty-six".