3731605 has 8 divisors (see below), whose sum is σ = 4489632. Its totient is φ = 2977488.

The previous prime is 3731603. The next prime is 3731621. The reversal of 3731605 is 5061373.

It is a happy number.

3731605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3731605 - 2¹ = 3731603 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 3731605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3731603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902 + ... + 3328.

It is an arithmetic number, because the mean of its divisors is an integer number (561204).

Almost surely, 2^3731605 is an apocalyptic number.

It is an amenable number.

3731605 is a deficient number, since it is larger than the sum of its proper divisors (758027).

3731605 is a wasteful number, since it uses less digits than its factorization.

3731605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 3731605 is about 1931.7362656429. The cubic root of 3731605 is about 155.1071752692.

Adding to 3731605 its reverse (5061373), we get a palindrome (8792978).

The spelling of 3731605 in words is "three million, seven hundred thirty-one thousand, six hundred five".