3643626 has 16 divisors (see below), whose sum is σ = 8328384. Its totient is φ = 1041024.

The previous prime is 3643621. The next prime is 3643631. The reversal of 3643626 is 6263463.

It is an interprime number because it is at equal distance from previous prime (3643621) and next prime (3643631).

It is a junction number, because it is equal to n+sod(n) for n = 3643593 and 3643602.

It is not an unprimeable number, because it can be changed into a prime (3643621) 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 7 ways as a sum of consecutive naturals, for example, 43335 + ... + 43418.

It is an arithmetic number, because the mean of its divisors is an integer number (520524).

Almost surely, 2^3643626 is an apocalyptic number.

3643626 is an abundant number, since it is smaller than the sum of its proper divisors (4684758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3643626 is a wasteful number, since it uses less digits than its factorization.

3643626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86765.

The product of its digits is 15552, while the sum is 30.

The square root of 3643626 is about 1908.8284365023. The cubic root of 3643626 is about 153.8784952648.

The spelling of 3643626 in words is "three million, six hundred forty-three thousand, six hundred twenty-six".