3645534 has 16 divisors (see below), whose sum is σ = 7384320. Its totient is φ = 1199640.

The previous prime is 3645533. The next prime is 3645539. The reversal of 3645534 is 4355463.

It is a d-powerful number, because it can be written as 3⁹ + 6 + 4² + 5⁷ + 5⁹ + 3¹³ + 4⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3372 + ... + 4319.

It is an arithmetic number, because the mean of its divisors is an integer number (461520).

Almost surely, 2^3645534 is an apocalyptic number.

3645534 is an abundant number, since it is smaller than the sum of its proper divisors (3738786).

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

3645534 is a wasteful number, since it uses less digits than its factorization.

3645534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7775.

The product of its digits is 21600, while the sum is 30.

The square root of 3645534 is about 1909.3281540898. The cubic root of 3645534 is about 153.9053502838.

The spelling of 3645534 in words is "three million, six hundred forty-five thousand, five hundred thirty-four".