3697641 has 12 divisors (see below), whose sum is σ = 5573568. Its totient is φ = 2357784.

The previous prime is 3697633. The next prime is 3697657. The reversal of 3697641 is 1467963.

3697641 is a `hidden beast` number, since 3 + 6 + 9 + 7 + 641 = 666.

It is not a de Polignac number, because 3697641 - 2³ = 3697633 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3697596 and 3697605.

It is not an unprimeable number, because it can be changed into a prime (3697691) 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 11 ways as a sum of consecutive naturals, for example, 8725 + ... + 9138.

It is an arithmetic number, because the mean of its divisors is an integer number (464464).

Almost surely, 2^3697641 is an apocalyptic number.

It is an amenable number.

3697641 is a deficient number, since it is larger than the sum of its proper divisors (1875927).

3697641 is a wasteful number, since it uses less digits than its factorization.

3697641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17892 (or 17889 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 3697641 is about 1922.9251155466. The cubic root of 3697641 is about 154.6351599476.

The spelling of 3697641 in words is "three million, six hundred ninety-seven thousand, six hundred forty-one".