3650121 has 12 divisors (see below), whose sum is σ = 5582772. Its totient is φ = 2290176.

The previous prime is 3650117. The next prime is 3650137. The reversal of 3650121 is 1210563.

3650121 is a `hidden beast` number, since 3 + 650 + 12 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1354896 + 2295225 = 1164^2 + 1515^2 .

It is not a de Polignac number, because 3650121 - 2² = 3650117 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3650094 and 3650103.

It is not an unprimeable number, because it can be changed into a prime (3650111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11776 + ... + 12081.

It is an arithmetic number, because the mean of its divisors is an integer number (465231).

Almost surely, 2^3650121 is an apocalyptic number.

It is an amenable number.

3650121 is a deficient number, since it is larger than the sum of its proper divisors (1932651).

3650121 is a wasteful number, since it uses less digits than its factorization.

3650121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23880 (or 23877 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 3650121 is about 1910.5289843392. The cubic root of 3650121 is about 153.9698737944.

Adding to 3650121 its reverse (1210563), we get a palindrome (4860684).

The spelling of 3650121 in words is "three million, six hundred fifty thousand, one hundred twenty-one".