3648331 has 4 divisors (see below), whose sum is σ = 3652632. Its totient is φ = 3644032.

The previous prime is 3648317. The next prime is 3648343. The reversal of 3648331 is 1338463.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3648331 is a prime.

It is a super-2 number, since 2×3648331² = 26620638171122, which contains 22 as substring.

It is a Duffinian number.

3648331 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3648331.

It is not an unprimeable number, because it can be changed into a prime (3648301) 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, 406 + ... + 2731.

It is an arithmetic number, because the mean of its divisors is an integer number (913158).

Almost surely, 2^3648331 is an apocalyptic number.

3648331 is a deficient number, since it is larger than the sum of its proper divisors (4301).

3648331 is a wasteful number, since it uses less digits than its factorization.

3648331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300.

The product of its digits is 5184, while the sum is 28.

The square root of 3648331 is about 1910.0604702470. The cubic root of 3648331 is about 153.9447010089.

The spelling of 3648331 in words is "three million, six hundred forty-eight thousand, three hundred thirty-one".