3645622 has 4 divisors (see below), whose sum is σ = 5468436. Its totient is φ = 1822810.

The previous prime is 3645611. The next prime is 3645623. The reversal of 3645622 is 2265463.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911404 + ... + 911407.

It is an arithmetic number, because the mean of its divisors is an integer number (1367109).

Almost surely, 2^3645622 is an apocalyptic number.

3645622 is a deficient number, since it is larger than the sum of its proper divisors (1822814).

3645622 is a wasteful number, since it uses less digits than its factorization.

3645622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822813.

The product of its digits is 8640, while the sum is 28.

The square root of 3645622 is about 1909.3511987060. The cubic root of 3645622 is about 153.9065886539.

The spelling of 3645622 in words is "three million, six hundred forty-five thousand, six hundred twenty-two".