3648623 has 4 divisors (see below), whose sum is σ = 3980328. Its totient is φ = 3316920.

The previous prime is 3648587. The next prime is 3648643. The reversal of 3648623 is 3268463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3268463 = 11 ⋅297133.

It is a cyclic number.

It is not a de Polignac number, because 3648623 - 2¹⁰ = 3647599 is a prime.

It is a super-2 number, since 2×3648623² = 26624899592258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3648623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648643) 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, 165836 + ... + 165857.

It is an arithmetic number, because the mean of its divisors is an integer number (995082).

Almost surely, 2^3648623 is an apocalyptic number.

3648623 is a deficient number, since it is larger than the sum of its proper divisors (331705).

3648623 is a wasteful number, since it uses less digits than its factorization.

3648623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331704.

The product of its digits is 20736, while the sum is 32.

The square root of 3648623 is about 1910.1369060881. The cubic root of 3648623 is about 153.9488079694.

The spelling of 3648623 in words is "three million, six hundred forty-eight thousand, six hundred twenty-three".