3664553 has 4 divisors (see below), whose sum is σ = 3669120. Its totient is φ = 3659988.

The previous prime is 3664547. The next prime is 3664561. The reversal of 3664553 is 3554663.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3554663 = 7 ⋅507809.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3664553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3667553) 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, 725 + ... + 2802.

It is an arithmetic number, because the mean of its divisors is an integer number (917280).

Almost surely, 2^3664553 is an apocalyptic number.

It is an amenable number.

3664553 is a deficient number, since it is larger than the sum of its proper divisors (4567).

3664553 is a wasteful number, since it uses less digits than its factorization.

3664553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566.

The product of its digits is 32400, while the sum is 32.

The square root of 3664553 is about 1914.3022227433. The cubic root of 3664553 is about 154.1725310974.

The spelling of 3664553 in words is "three million, six hundred sixty-four thousand, five hundred fifty-three".