747226656 has 144 divisors (see below), whose sum is σ = 2335132800. Its totient is φ = 224770560.

The previous prime is 747226643. The next prime is 747226663. The reversal of 747226656 is 656622747.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 471241 + ... + 472823.

It is an arithmetic number, because the mean of its divisors is an integer number (16216200).

Almost surely, 2^747226656 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 747226656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167566400).

747226656 is an abundant number, since it is smaller than the sum of its proper divisors (1587906144).

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

747226656 is a wasteful number, since it uses less digits than its factorization.

747226656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759 (or 1748 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 747226656 is about 27335.4468776349. The cubic root of 747226656 is about 907.4390242026.

The spelling of 747226656 in words is "seven hundred forty-seven million, two hundred twenty-six thousand, six hundred fifty-six".