3608731 has 12 divisors (see below), whose sum is σ = 4278352. Its totient is φ = 2981664.

The previous prime is 3608729. The next prime is 3608747. The reversal of 3608731 is 1378063.

3608731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3608731 - 2¹ = 3608729 is a prime.

It is a super-2 number, since 2×3608731² = 26045878860722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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 3608731.

It is not an unprimeable number, because it can be changed into a prime (3608701) 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 11 ways as a sum of consecutive naturals, for example, 5581 + ... + 6193.

Almost surely, 2^3608731 is an apocalyptic number.

3608731 is a deficient number, since it is larger than the sum of its proper divisors (669621).

3608731 is an equidigital number, since it uses as much as digits as its factorization.

3608731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3608731 is about 1899.6660232788. Note that the first 3 decimals coincide. The cubic root of 3608731 is about 153.3856873313.

The spelling of 3608731 in words is "three million, six hundred eight thousand, seven hundred thirty-one".