3624921 has 6 divisors (see below), whose sum is σ = 5236010. Its totient is φ = 2416608.

The previous prime is 3624919. The next prime is 3624931. The reversal of 3624921 is 1294263.

It can be written as a sum of positive squares in only one way, i.e., 2359296 + 1265625 = 1536^2 + 1125^2 .

It is not a de Polignac number, because 3624921 - 2¹ = 3624919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3624911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201376 + ... + 201393.

Almost surely, 2^3624921 is an apocalyptic number.

It is an amenable number.

3624921 is a deficient number, since it is larger than the sum of its proper divisors (1611089).

3624921 is a wasteful number, since it uses less digits than its factorization.

3624921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402775 (or 402772 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 3624921 is about 1903.9225299366. The cubic root of 3624921 is about 153.6147253542.

The spelling of 3624921 in words is "three million, six hundred twenty-four thousand, nine hundred twenty-one".