3621237 has 4 divisors (see below), whose sum is σ = 4828320. Its totient is φ = 2414156.

The previous prime is 3621223. The next prime is 3621239. The reversal of 3621237 is 7321263.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7321263 = 3 ⋅2440421.

It is a cyclic number.

It is not a de Polignac number, because 3621237 - 2¹⁵ = 3588469 is a prime.

It is a super-2 number, since 2×3621237² = 26226714820338, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621239) 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, 603537 + ... + 603542.

It is an arithmetic number, because the mean of its divisors is an integer number (1207080).

Almost surely, 2^3621237 is an apocalyptic number.

It is an amenable number.

3621237 is a deficient number, since it is larger than the sum of its proper divisors (1207083).

3621237 is a wasteful number, since it uses less digits than its factorization.

3621237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207082.

The product of its digits is 1512, while the sum is 24.

The square root of 3621237 is about 1902.9548076610. The cubic root of 3621237 is about 153.5626682685.

The spelling of 3621237 in words is "three million, six hundred twenty-one thousand, two hundred thirty-seven".