3622921 has 8 divisors (see below), whose sum is σ = 3909384. Its totient is φ = 3344640.

The previous prime is 3622919. The next prime is 3622951. The reversal of 3622921 is 1292263.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 511225 + 3111696 = 715^2 + 1764^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3622921 - 2¹ = 3622919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3622951) 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, 1110 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (488673).

Almost surely, 2^3622921 is an apocalyptic number.

It is an amenable number.

3622921 is a deficient number, since it is larger than the sum of its proper divisors (286463).

3622921 is a wasteful number, since it uses less digits than its factorization.

3622921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4091.

The product of its digits is 1296, while the sum is 25.

The square root of 3622921 is about 1903.3972260146. The cubic root of 3622921 is about 153.5864685571.

The spelling of 3622921 in words is "three million, six hundred twenty-two thousand, nine hundred twenty-one".