654622 has 4 divisors (see below), whose sum is σ = 981936. Its totient is φ = 327310.

The previous prime is 654613. The next prime is 654623. The reversal of 654622 is 226456.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654623) by changing a digit.

654622 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163654 + ... + 163657.

It is an arithmetic number, because the mean of its divisors is an integer number (245484).

2⁶⁵⁴⁶²² is an apocalyptic number.

654622 is a deficient number, since it is larger than the sum of its proper divisors (327314).

654622 is a wasteful number, since it uses less digits than its factorization.

654622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327313.

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

The square root of 654622 is about 809.0871399299. The cubic root of 654622 is about 86.8287466636.

The spelling of 654622 in words is "six hundred fifty-four thousand, six hundred twenty-two".