3619645 has 8 divisors (see below), whose sum is σ = 4357080. Its totient is φ = 2886720.

The previous prime is 3619643. The next prime is 3619663. The reversal of 3619645 is 5469163.

It can be written as a sum of positive squares in 4 ways, for example, as 133956 + 3485689 = 366^2 + 1867^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3619645 - 2¹ = 3619643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3619645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3619643) 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, 1015 + ... + 2875.

It is an arithmetic number, because the mean of its divisors is an integer number (544635).

Almost surely, 2^3619645 is an apocalyptic number.

It is an amenable number.

3619645 is a deficient number, since it is larger than the sum of its proper divisors (737435).

3619645 is a wasteful number, since it uses less digits than its factorization.

3619645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255.

The product of its digits is 19440, while the sum is 34.

The square root of 3619645 is about 1902.5364648279. The cubic root of 3619645 is about 153.5401614472.

The spelling of 3619645 in words is "three million, six hundred nineteen thousand, six hundred forty-five".