722634854656 has 576 divisors, whose sum is σ = 1817230464000. Its totient is φ = 282273546240.

The previous prime is 722634854621. The next prime is 722634854663. The reversal of 722634854656 is 656458436227.

It is a happy number.

It is a super-2 number, since 2×722634854656² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

Its product of digits (58060800) is a multiple of the sum of its prime divisors (336).

It is a self number, because there is not a number n which added to its sum of digits gives 722634854656.

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 63 ways as a sum of consecutive naturals, for example, 5198811835 + ... + 5198811973.

It is an arithmetic number, because the mean of its divisors is an integer number (3154914000).

Almost surely, 2^722634854656 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 722634854656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (908615232000).

722634854656 is an abundant number, since it is smaller than the sum of its proper divisors (1094595609344).

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

722634854656 is a wasteful number, since it uses less digits than its factorization.

722634854656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 336 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 58.

The spelling of 722634854656 in words is "seven hundred twenty-two billion, six hundred thirty-four million, eight hundred fifty-four thousand, six hundred fifty-six".