3648667 has 4 divisors (see below), whose sum is σ = 3980376. Its totient is φ = 3316960.

The previous prime is 3648661. The next prime is 3648683. The reversal of 3648667 is 7668463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7668463 = 11 ⋅697133.

It is a cyclic number.

It is not a de Polignac number, because 3648667 - 2⁷ = 3648539 is a prime.

It is a super-3 number, since 3×3648667³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3648661) 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, 165838 + ... + 165859.

It is an arithmetic number, because the mean of its divisors is an integer number (995094).

Almost surely, 2^3648667 is an apocalyptic number.

3648667 is a deficient number, since it is larger than the sum of its proper divisors (331709).

3648667 is a wasteful number, since it uses less digits than its factorization.

3648667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331708.

The product of its digits is 145152, while the sum is 40.

The square root of 3648667 is about 1910.1484235525. The cubic root of 3648667 is about 153.9494268074.

The spelling of 3648667 in words is "three million, six hundred forty-eight thousand, six hundred sixty-seven".