722856698310656 has 624 divisors, whose sum is σ = 1918815703590240. Its totient is φ = 268947286917120.

The previous prime is 722856698310647. The next prime is 722856698310667. The reversal of 722856698310656 is 656013896658227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70037461976 + ... + 70037472296.

It is an arithmetic number, because the mean of its divisors is an integer number (3075025166010).

Almost surely, 2^{722856698310656} 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 722856698310656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (959407851795120).

722856698310656 is an abundant number, since it is smaller than the sum of its proper divisors (1195959005279584).

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

722856698310656 is a wasteful number, since it uses less digits than its factorization.

722856698310656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11968 (or 11939 counting only the distinct ones).

The product of its (nonzero) digits is 1567641600, while the sum is 74.

The spelling of 722856698310656 in words is "seven hundred twenty-two trillion, eight hundred fifty-six billion, six hundred ninety-eight million, three hundred ten thousand, six hundred fifty-six".