3651822 has 12 divisors (see below), whose sum is σ = 7912320. Its totient is φ = 1217268.

The previous prime is 3651811. The next prime is 3651839. The reversal of 3651822 is 2281563.

3651822 is a `hidden beast` number, since 3 + 651 + 8 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101422 + ... + 101457.

It is an arithmetic number, because the mean of its divisors is an integer number (659360).

Almost surely, 2^3651822 is an apocalyptic number.

3651822 is an abundant number, since it is smaller than the sum of its proper divisors (4260498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3651822 is a wasteful number, since it uses less digits than its factorization.

3651822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202887 (or 202884 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 3651822 is about 1910.9740971557. The cubic root of 3651822 is about 153.9937873471.

It can be divided in two parts, 365 and 1822, that added together give a 7-th power (2187 = 3⁷).

The spelling of 3651822 in words is "three million, six hundred fifty-one thousand, eight hundred twenty-two".