3667647 has 16 divisors (see below), whose sum is σ = 5052672. Its totient is φ = 2365440.

The previous prime is 3667637. The next prime is 3667669. The reversal of 3667647 is 7467663.

It is a de Polignac number, because none of the positive numbers 2^k-3667647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3667637) 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, 14143 + ... + 14399.

It is an arithmetic number, because the mean of its divisors is an integer number (315792).

Almost surely, 2^3667647 is an apocalyptic number.

3667647 is a deficient number, since it is larger than the sum of its proper divisors (1385025).

3667647 is a wasteful number, since it uses less digits than its factorization.

3667647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

The product of its digits is 127008, while the sum is 39.

The square root of 3667647 is about 1915.1101795980. The cubic root of 3667647 is about 154.2159084322.

The spelling of 3667647 in words is "three million, six hundred sixty-seven thousand, six hundred forty-seven".