656746112 has 64 divisors (see below), whose sum is σ = 1437220800. Its totient is φ = 296448000.

The previous prime is 656746109. The next prime is 656746121. The reversal of 656746112 is 211647656.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 211064 + ... + 214152.

It is an arithmetic number, because the mean of its divisors is an integer number (22456575).

Almost surely, 2^656746112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656746112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718610400).

656746112 is an abundant number, since it is smaller than the sum of its proper divisors (780474688).

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

656746112 is a wasteful number, since it uses less digits than its factorization.

656746112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265 (or 3253 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 656746112 is about 25627.0582002695. The cubic root of 656746112 is about 869.2255900027.

The spelling of 656746112 in words is "six hundred fifty-six million, seven hundred forty-six thousand, one hundred twelve".