3664543 has 4 divisors (see below), whose sum is σ = 3742560. Its totient is φ = 3586528.

The previous prime is 3664519. The next prime is 3664547. The reversal of 3664543 is 3454663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3454663 = 43 ⋅80341.

It is a cyclic number.

It is not a de Polignac number, because 3664543 - 2¹⁷ = 3533471 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6⁶ + 6⁶ + 4 + 5⁹ + 4⁶ + 3¹³ .

It is a Duffinian number.

3664543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664547) 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, 38938 + ... + 39031.

It is an arithmetic number, because the mean of its divisors is an integer number (935640).

Almost surely, 2^3664543 is an apocalyptic number.

3664543 is a deficient number, since it is larger than the sum of its proper divisors (78017).

3664543 is an equidigital number, since it uses as much as digits as its factorization.

3664543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78016.

The product of its digits is 25920, while the sum is 31.

The square root of 3664543 is about 1914.2996108238. The cubic root of 3664543 is about 154.1723908596.

The spelling of 3664543 in words is "three million, six hundred sixty-four thousand, five hundred forty-three".