3623281 has 4 divisors (see below), whose sum is σ = 3814000. Its totient is φ = 3432564.

The previous prime is 3623273. The next prime is 3623287. The reversal of 3623281 is 1823263.

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.

It is a cyclic number.

It is not a de Polignac number, because 3623281 - 2³ = 3623273 is a prime.

It is a super-2 number, since 2×3623281² = 26256330409922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3623287) 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, 95331 + ... + 95368.

It is an arithmetic number, because the mean of its divisors is an integer number (953500).

Almost surely, 2^3623281 is an apocalyptic number.

It is an amenable number.

3623281 is a deficient number, since it is larger than the sum of its proper divisors (190719).

3623281 is a wasteful number, since it uses less digits than its factorization.

3623281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190718.

The product of its digits is 1728, while the sum is 25.

The square root of 3623281 is about 1903.4917914191. The cubic root of 3623281 is about 153.5915555479.

The spelling of 3623281 in words is "three million, six hundred twenty-three thousand, two hundred eighty-one".