3634645 has 16 divisors (see below), whose sum is σ = 5034240. Its totient is φ = 2467584.

The previous prime is 3634639. The next prime is 3634663. The reversal of 3634645 is 5464363.

It is not a de Polignac number, because 3634645 - 2³ = 3634637 is a prime.

It is a d-powerful number, because it can be written as 3⁴ + 6 + 3⁶ + 4³ + 6⁸ + 4⁵ + 5⁹ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3496 + ... + 4414.

It is an arithmetic number, because the mean of its divisors is an integer number (314640).

Almost surely, 2^3634645 is an apocalyptic number.

3634645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3634645 is a deficient number, since it is larger than the sum of its proper divisors (1399595).

3634645 is a wasteful number, since it uses less digits than its factorization.

3634645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its digits is 25920, while the sum is 31.

The square root of 3634645 is about 1906.4744949776. The cubic root of 3634645 is about 153.7519619905.

The spelling of 3634645 in words is "three million, six hundred thirty-four thousand, six hundred forty-five".