3641971 has 4 divisors (see below), whose sum is σ = 3726712. Its totient is φ = 3557232.

The previous prime is 3641951. The next prime is 3641987. The reversal of 3641971 is 1791463.

It is a happy number.

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 3641971 - 2¹³ = 3633779 is a prime.

It is a Duffinian number.

3641971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3641951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42306 + ... + 42391.

It is an arithmetic number, because the mean of its divisors is an integer number (931678).

Almost surely, 2^3641971 is an apocalyptic number.

3641971 is a deficient number, since it is larger than the sum of its proper divisors (84741).

3641971 is an equidigital number, since it uses as much as digits as its factorization.

3641971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84740.

The product of its digits is 4536, while the sum is 31.

The square root of 3641971 is about 1908.3948752813. The cubic root of 3641971 is about 153.8551936163.

The spelling of 3641971 in words is "three million, six hundred forty-one thousand, nine hundred seventy-one".