3662321 has 4 divisors (see below), whose sum is σ = 3944052. Its totient is φ = 3380592.

The previous prime is 3662311. The next prime is 3662363. The reversal of 3662321 is 1232663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232663 = 19 ⋅64877.

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 1600225 = 1436^2 + 1265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3662321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3662311) 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, 140846 + ... + 140871.

It is an arithmetic number, because the mean of its divisors is an integer number (986013).

Almost surely, 2^3662321 is an apocalyptic number.

It is an amenable number.

3662321 is a deficient number, since it is larger than the sum of its proper divisors (281731).

3662321 is a wasteful number, since it uses less digits than its factorization.

3662321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281730.

The product of its digits is 1296, while the sum is 23.

The square root of 3662321 is about 1913.7191538990. The cubic root of 3662321 is about 154.1412236886.

Adding to 3662321 its reverse (1232663), we get a palindrome (4894984).

The spelling of 3662321 in words is "three million, six hundred sixty-two thousand, three hundred twenty-one".