3664671 has 4 divisors (see below), whose sum is σ = 4886232. Its totient is φ = 2443112.

The previous prime is 3664657. The next prime is 3664679. The reversal of 3664671 is 1764663.

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 3664671 - 2¹⁸ = 3402527 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664679) 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, 610776 + ... + 610781.

It is an arithmetic number, because the mean of its divisors is an integer number (1221558).

Almost surely, 2^3664671 is an apocalyptic number.

3664671 is a deficient number, since it is larger than the sum of its proper divisors (1221561).

3664671 is a wasteful number, since it uses less digits than its factorization.

3664671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221560.

The product of its digits is 18144, while the sum is 33.

The square root of 3664671 is about 1914.3330431249. Note that the first 3 decimals coincide. The cubic root of 3664671 is about 154.1741858844.

The spelling of 3664671 in words is "three million, six hundred sixty-four thousand, six hundred seventy-one".