3643487 has 4 divisors (see below), whose sum is σ = 3721056. Its totient is φ = 3565920.

The previous prime is 3643483. The next prime is 3643511. The reversal of 3643487 is 7843463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3643487 - 2² = 3643483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38714 + ... + 38807.

It is an arithmetic number, because the mean of its divisors is an integer number (930264).

Almost surely, 2^3643487 is an apocalyptic number.

3643487 is a deficient number, since it is larger than the sum of its proper divisors (77569).

3643487 is an equidigital number, since it uses as much as digits as its factorization.

3643487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77568.

The product of its digits is 48384, while the sum is 35.

The square root of 3643487 is about 1908.7920263874. The cubic root of 3643487 is about 153.8765384794.

The spelling of 3643487 in words is "three million, six hundred forty-three thousand, four hundred eighty-seven".