3649837 has 4 divisors (see below), whose sum is σ = 3686076. Its totient is φ = 3613600.

The previous prime is 3649831. The next prime is 3649871. The reversal of 3649837 is 7389463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2979076 + 670761 = 1726^2 + 819^2 .

It is a cyclic number.

It is not a de Polignac number, because 3649837 - 2¹⁵ = 3617069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3649837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649831) 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 3 ways as a sum of consecutive naturals, for example, 17968 + ... + 18169.

It is an arithmetic number, because the mean of its divisors is an integer number (921519).

Almost surely, 2^3649837 is an apocalyptic number.

It is an amenable number.

3649837 is a deficient number, since it is larger than the sum of its proper divisors (36239).

3649837 is a wasteful number, since it uses less digits than its factorization.

3649837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36238.

The product of its digits is 108864, while the sum is 40.

The square root of 3649837 is about 1910.4546579283. The cubic root of 3649837 is about 153.9658804493.

It can be divided in two parts, 364 and 9837, that added together give a palindrome (10201).

The spelling of 3649837 in words is "three million, six hundred forty-nine thousand, eight hundred thirty-seven".