3662121 has 8 divisors (see below), whose sum is σ = 4913440. Its totient is φ = 2426112.

The previous prime is 3662119. The next prime is 3662137. The reversal of 3662121 is 1212663.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3662121 - 2¹ = 3662119 is a prime.

It is a super-2 number, since 2×3662121² = 26822260437282, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3662101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3256 + ... + 4233.

It is an arithmetic number, because the mean of its divisors is an integer number (614180).

Almost surely, 2^3662121 is an apocalyptic number.

It is an amenable number.

3662121 is a deficient number, since it is larger than the sum of its proper divisors (1251319).

3662121 is a wasteful number, since it uses less digits than its factorization.

3662121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7655.

The product of its digits is 432, while the sum is 21.

The square root of 3662121 is about 1913.6668989142. Note that the first 3 decimals coincide. The cubic root of 3662121 is about 154.1384177443.

Adding to 3662121 its reverse (1212663), we get a palindrome (4874784).

The spelling of 3662121 in words is "three million, six hundred sixty-two thousand, one hundred twenty-one".