656422 has 8 divisors (see below), whose sum is σ = 1060416. Its totient is φ = 302952.

The previous prime is 656407. The next prime is 656423. The reversal of 656422 is 224656.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656423) by changing a digit.

656422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12598 + ... + 12649.

It is an arithmetic number, because the mean of its divisors is an integer number (132552).

2⁶⁵⁶⁴²² is an apocalyptic number.

656422 is a deficient number, since it is larger than the sum of its proper divisors (403994).

656422 is a wasteful number, since it uses less digits than its factorization.

656422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25262.

The product of its digits is 2880, while the sum is 25.

The square root of 656422 is about 810.1987410506. The cubic root of 656422 is about 86.9082575426.

The spelling of 656422 in words is "six hundred fifty-six thousand, four hundred twenty-two".