3630881 has 4 divisors (see below), whose sum is σ = 3822000. Its totient is φ = 3439764.

The previous prime is 3630859. The next prime is 3630883. The reversal of 3630881 is 1880363.

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 3630881 - 2⁶ = 3630817 is a prime.

It is a super-2 number, since 2×3630881² = 26366593672322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3630883) 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, 95531 + ... + 95568.

It is an arithmetic number, because the mean of its divisors is an integer number (955500).

Almost surely, 2^3630881 is an apocalyptic number.

It is an amenable number.

3630881 is a deficient number, since it is larger than the sum of its proper divisors (191119).

3630881 is a wasteful number, since it uses less digits than its factorization.

3630881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191118.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 3630881 is about 1905.4870768389. The cubic root of 3630881 is about 153.6988690224.

The spelling of 3630881 in words is "three million, six hundred thirty thousand, eight hundred eighty-one".