3722005 has 32 divisors (see below), whose sum is σ = 5587200. Its totient is φ = 2322432.

The previous prime is 3721981. The next prime is 3722009. The reversal of 3722005 is 5002273.

It is a happy number.

3722005 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 3722005 - 2⁵ = 3721973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3722009) 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 31 ways as a sum of consecutive naturals, for example, 19189 + ... + 19381.

It is an arithmetic number, because the mean of its divisors is an integer number (174600).

Almost surely, 2^3722005 is an apocalyptic number.

3722005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3722005 is the 965-th decagonal number.

It is an amenable number.

3722005 is a deficient number, since it is larger than the sum of its proper divisors (1865195).

3722005 is a wasteful number, since it uses less digits than its factorization.

3722005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 3722005 is about 1929.2498542180. The cubic root of 3722005 is about 154.9740504599.

Adding to 3722005 its reverse (5002273), we get a palindrome (8724278).

The spelling of 3722005 in words is "three million, seven hundred twenty-two thousand, five".