3680121 has 4 divisors (see below), whose sum is σ = 4906832. Its totient is φ = 2453412.

The previous prime is 3680113. The next prime is 3680123. The reversal of 3680121 is 1210863.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1210863 = 3 ⋅403621.

It is not a de Polignac number, because 3680121 - 2³ = 3680113 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3680123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613351 + ... + 613356.

It is an arithmetic number, because the mean of its divisors is an integer number (1226708).

Almost surely, 2^3680121 is an apocalyptic number.

It is an amenable number.

3680121 is a deficient number, since it is larger than the sum of its proper divisors (1226711).

3680121 is a wasteful number, since it uses less digits than its factorization.

3680121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226710.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 3680121 is about 1918.3641468710. The cubic root of 3680121 is about 154.3905446929.

Adding to 3680121 its reverse (1210863), we get a palindrome (4890984).

The spelling of 3680121 in words is "three million, six hundred eighty thousand, one hundred twenty-one".