3649875 has 16 divisors (see below), whose sum is σ = 6074016. Its totient is φ = 1946400.

The previous prime is 3649871. The next prime is 3649889. The reversal of 3649875 is 5789463.

It is a happy number.

It is not a de Polignac number, because 3649875 - 2² = 3649871 is a prime.

3649875 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3649871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4492 + ... + 5241.

It is an arithmetic number, because the mean of its divisors is an integer number (379626).

Almost surely, 2^3649875 is an apocalyptic number.

3649875 is a deficient number, since it is larger than the sum of its proper divisors (2424141).

3649875 is an equidigital number, since it uses as much as digits as its factorization.

3649875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9751 (or 9741 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 3649875 is about 1910.4646031790. The cubic root of 3649875 is about 153.9664147821.

The spelling of 3649875 in words is "three million, six hundred forty-nine thousand, eight hundred seventy-five".