3648445 has 4 divisors (see below), whose sum is σ = 4378140. Its totient is φ = 2918752.

The previous prime is 3648439. The next prime is 3648451. The reversal of 3648445 is 5448463.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3648439) and next prime (3648451).

It can be written as a sum of positive squares in 2 ways, for example, as 710649 + 2937796 = 843^2 + 1714^2 .

It is a cyclic number.

It is not a de Polignac number, because 3648445 - 2⁵ = 3648413 is a prime.

It is a super-3 number, since 3×3648445³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 3648445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364840 + ... + 364849.

It is an arithmetic number, because the mean of its divisors is an integer number (1094535).

Almost surely, 2^3648445 is an apocalyptic number.

It is an amenable number.

3648445 is a deficient number, since it is larger than the sum of its proper divisors (729695).

3648445 is an equidigital number, since it uses as much as digits as its factorization.

3648445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729694.

The product of its digits is 46080, while the sum is 34.

The square root of 3648445 is about 1910.0903120010. The cubic root of 3648445 is about 153.9463044374.

The spelling of 3648445 in words is "three million, six hundred forty-eight thousand, four hundred forty-five".