3645512 has 16 divisors (see below), whose sum is σ = 7361340. Its totient is φ = 1682496.

The previous prime is 3645469. The next prime is 3645527. The reversal of 3645512 is 2155463.

It can be written as a sum of positive squares in 2 ways, for example, as 3147076 + 498436 = 1774^2 + 706^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17423 + ... + 17630.

Almost surely, 2^3645512 is an apocalyptic number.

It is an amenable number.

3645512 is an abundant number, since it is smaller than the sum of its proper divisors (3715828).

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

3645512 is a wasteful number, since it uses less digits than its factorization.

3645512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35072 (or 35068 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 3645512 is about 1909.3223928923. The cubic root of 3645512 is about 153.9050406881.

The spelling of 3645512 in words is "three million, six hundred forty-five thousand, five hundred twelve".