3643407 has 16 divisors (see below), whose sum is σ = 5633280. Its totient is φ = 2322936.

The previous prime is 3643403. The next prime is 3643411. The reversal of 3643407 is 7043463.

It is an interprime number because it is at equal distance from previous prime (3643403) and next prime (3643411).

It is not a de Polignac number, because 3643407 - 2² = 3643403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643403) 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, 2313 + ... + 3554.

It is an arithmetic number, because the mean of its divisors is an integer number (352080).

Almost surely, 2^3643407 is an apocalyptic number.

3643407 is a deficient number, since it is larger than the sum of its proper divisors (1989873).

3643407 is a wasteful number, since it uses less digits than its factorization.

3643407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899 (or 5893 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 3643407 is about 1908.7710706106. The cubic root of 3643407 is about 153.8754122494.

The spelling of 3643407 in words is "three million, six hundred forty-three thousand, four hundred seven".