3722657 has 4 divisors (see below), whose sum is σ = 3727536. Its totient is φ = 3717780.

The previous prime is 3722629. The next prime is 3722683. The reversal of 3722657 is 7562273.

It is a happy number.

3722657 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3722657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3722617) 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, 1019 + ... + 2912.

It is an arithmetic number, because the mean of its divisors is an integer number (931884).

Almost surely, 2^3722657 is an apocalyptic number.

It is an amenable number.

3722657 is a deficient number, since it is larger than the sum of its proper divisors (4879).

3722657 is an equidigital number, since it uses as much as digits as its factorization.

3722657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878.

The product of its digits is 17640, while the sum is 32.

The square root of 3722657 is about 1929.4188244132. The cubic root of 3722657 is about 154.9830990937.

The spelling of 3722657 in words is "three million, seven hundred twenty-two thousand, six hundred fifty-seven".