3648071 has 4 divisors (see below), whose sum is σ = 4169232. Its totient is φ = 3126912.

The previous prime is 3648067. The next prime is 3648079. The reversal of 3648071 is 1708463.

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 3648071 - 2² = 3648067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260570 + ... + 260583.

It is an arithmetic number, because the mean of its divisors is an integer number (1042308).

Almost surely, 2^3648071 is an apocalyptic number.

3648071 is a deficient number, since it is larger than the sum of its proper divisors (521161).

3648071 is an equidigital number, since it uses as much as digits as its factorization.

3648071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521160.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 3648071 is about 1909.9924083619. The cubic root of 3648071 is about 153.9410439419.

Adding to 3648071 its sum of digits (29), we get a square (3648100 = 1910²).

The spelling of 3648071 in words is "three million, six hundred forty-eight thousand, seventy-one".