651822 has 8 divisors (see below), whose sum is σ = 1303656. Its totient is φ = 217272.

The previous prime is 651821. The next prime is 651839. The reversal of 651822 is 228156.

It is a sphenic number, since it is the product of 3 distinct primes.

651822 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 651792 and 651801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54313 + ... + 54324.

It is an arithmetic number, because the mean of its divisors is an integer number (162957).

2⁶⁵¹⁸²² is an apocalyptic number.

651822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

651822 is a wasteful number, since it uses less digits than its factorization.

651822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108642.

The product of its digits is 960, while the sum is 24.

The square root of 651822 is about 807.3549405311. The cubic root of 651822 is about 86.7047728549.

Adding to 651822 its reverse (228156), we get a palindrome (879978).

The spelling of 651822 in words is "six hundred fifty-one thousand, eight hundred twenty-two".