3643047 has 6 divisors (see below), whose sum is σ = 5262192. Its totient is φ = 2428692.

The previous prime is 3643043. The next prime is 3643063. The reversal of 3643047 is 7403463.

It is not a de Polignac number, because 3643047 - 2² = 3643043 is a prime.

3643047 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3643047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202383 + ... + 202400.

It is an arithmetic number, because the mean of its divisors is an integer number (877032).

Almost surely, 2^3643047 is an apocalyptic number.

3643047 is a deficient number, since it is larger than the sum of its proper divisors (1619145).

3643047 is a wasteful number, since it uses less digits than its factorization.

3643047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404789 (or 404786 counting only the distinct ones).

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

The square root of 3643047 is about 1908.6767667680. The cubic root of 3643047 is about 153.8703440103.

The spelling of 3643047 in words is "three million, six hundred forty-three thousand, forty-seven".