3641994 has 24 divisors (see below), whose sum is σ = 8164260. Its totient is φ = 1171968.

The previous prime is 3641987. The next prime is 3641999. The reversal of 3641994 is 4991463.

3641994 is a `hidden beast` number, since 3 + 641 + 9 + 9 + 4 = 666.

3641994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3560769 + 81225 = 1887^2 + 285^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3641999) 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, 2967 + ... + 4010.

Almost surely, 2^3641994 is an apocalyptic number.

3641994 is an abundant number, since it is smaller than the sum of its proper divisors (4522266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3641994 is a wasteful number, since it uses less digits than its factorization.

3641994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7014 (or 7011 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3641994 is about 1908.4009012783. The cubic root of 3641994 is about 153.8555174942.

The spelling of 3641994 in words is "three million, six hundred forty-one thousand, nine hundred ninety-four".