3645625473 has 12 divisors (see below), whose sum is σ = 6018175488. Its totient is φ = 2083214520.

The previous prime is 3645625447. The next prime is 3645625481. The reversal of 3645625473 is 3745265463.

3645625473 is a `hidden beast` number, since 3 + 6 + 45 + 62 + 547 + 3 = 666.

It is not a de Polignac number, because 3645625473 - 2¹⁶ = 3645559937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3645625433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28933473 + ... + 28933598.

It is an arithmetic number, because the mean of its divisors is an integer number (501514624).

Almost surely, 2^3645625473 is an apocalyptic number.

It is an amenable number.

3645625473 is a deficient number, since it is larger than the sum of its proper divisors (2372550015).

3645625473 is a wasteful number, since it uses less digits than its factorization.

3645625473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57867084 (or 57867081 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

The square root of 3645625473 is about 60379.0151708356. The cubic root of 3645625473 is about 1539.0663752694.

The spelling of 3645625473 in words is "three billion, six hundred forty-five million, six hundred twenty-five thousand, four hundred seventy-three".