3653731 has 4 divisors (see below), whose sum is σ = 3705264. Its totient is φ = 3602200.

The previous prime is 3653701. The next prime is 3653737. The reversal of 3653731 is 1373563.

3653731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3653731 - 2⁷ = 3653603 is a prime.

It is a super-2 number, since 2×3653731² = 26699500440722, which contains 22 as substring.

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 3653731.

It is not an unprimeable number, because it can be changed into a prime (3653737) 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 3 ways as a sum of consecutive naturals, for example, 25660 + ... + 25801.

It is an arithmetic number, because the mean of its divisors is an integer number (926316).

Almost surely, 2^3653731 is an apocalyptic number.

3653731 is a deficient number, since it is larger than the sum of its proper divisors (51533).

3653731 is an equidigital number, since it uses as much as digits as its factorization.

3653731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51532.

The product of its digits is 5670, while the sum is 28.

The square root of 3653731 is about 1911.4735153802. The cubic root of 3653731 is about 154.0206162313.

It can be divided in two parts, 365 and 3731, that added together give a 12-th power (4096 = 2¹²).

The spelling of 3653731 in words is "three million, six hundred fifty-three thousand, seven hundred thirty-one".