654556122 has 96 divisors (see below), whose sum is σ = 1623608064. Its totient is φ = 188784000.

The previous prime is 654556121. The next prime is 654556139. The reversal of 654556122 is 221655456.

It is not an unprimeable number, because it can be changed into a prime (654556121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 343372 + ... + 345272.

It is an arithmetic number, because the mean of its divisors is an integer number (16912584).

Almost surely, 2^654556122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654556122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811804032).

654556122 is an abundant number, since it is smaller than the sum of its proper divisors (969051942).

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

654556122 is a wasteful number, since it uses less digits than its factorization.

654556122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2004 (or 2001 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 654556122 is about 25584.2944401443. The cubic root of 654556122 is about 868.2583389054.

The spelling of 654556122 in words is "six hundred fifty-four million, five hundred fifty-six thousand, one hundred twenty-two".