651622 has 8 divisors (see below), whose sum is σ = 1000296. Its totient is φ = 318192.

The previous prime is 651617. The next prime is 651641. The reversal of 651622 is 226156.

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

It is a super-2 number, since 2×651622² = 849222461768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 651593 and 651602.

It is a congruent number.

It is an unprimeable number.

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, 3703 + ... + 3874.

It is an arithmetic number, because the mean of its divisors is an integer number (125037).

2⁶⁵¹⁶²² is an apocalyptic number.

651622 is a deficient number, since it is larger than the sum of its proper divisors (348674).

651622 is a wasteful number, since it uses less digits than its factorization.

651622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7622.

The product of its digits is 720, while the sum is 22.

The square root of 651622 is about 807.2310697687. The cubic root of 651622 is about 86.6959040080.

Adding to 651622 its reverse (226156), we get a palindrome (877778).

The spelling of 651622 in words is "six hundred fifty-one thousand, six hundred twenty-two".