3640408 has 16 divisors (see below), whose sum is σ = 6887880. Its totient is φ = 1803648.

The previous prime is 3640391. The next prime is 3640409. The reversal of 3640408 is 8040463.

3640408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640409) 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, 1110 + ... + 2917.

Almost surely, 2^3640408 is an apocalyptic number.

It is an amenable number.

3640408 is a deficient number, since it is larger than the sum of its proper divisors (3247472).

3640408 is a wasteful number, since it uses less digits than its factorization.

3640408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146 (or 4142 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 3640408 is about 1907.9853248912. The cubic root of 3640408 is about 153.8331808035.

The spelling of 3640408 in words is "three million, six hundred forty thousand, four hundred eight".