3645434 has 16 divisors (see below), whose sum is σ = 5934600. Its totient is φ = 1669440.

The previous prime is 3645419. The next prime is 3645449. The reversal of 3645434 is 4345463.

It is an interprime number because it is at equal distance from previous prime (3645419) and next prime (3645449).

It can be written as a sum of positive squares in 4 ways, for example, as 1968409 + 1677025 = 1403^2 + 1295^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3645397 and 3645406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3404 + ... + 4344.

Almost surely, 2^3645434 is an apocalyptic number.

3645434 is a deficient number, since it is larger than the sum of its proper divisors (2289166).

3645434 is a wasteful number, since it uses less digits than its factorization.

3645434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its digits is 17280, while the sum is 29.

The square root of 3645434 is about 1909.3019666883. The cubic root of 3645434 is about 153.9039430207.

Adding to 3645434 its sum of digits (29), we get a palindrome (3645463).

The spelling of 3645434 in words is "three million, six hundred forty-five thousand, four hundred thirty-four".