726684353856 has 84 divisors (see below), whose sum is σ = 2160054335712. Its totient is φ = 242228112768.

The previous prime is 726684353833. The next prime is 726684353881. The reversal of 726684353856 is 658353486627.

726684353856 is a `hidden beast` number, since 7 + 2 + 6 + 6 + 8 + 43 + 538 + 56 = 666.

It is a super-2 number, since 2×726684353856² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 726684353793 and 726684353802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23347500 + ... + 23378603.

It is an arithmetic number, because the mean of its divisors is an integer number (25714932568).

Almost surely, 2^726684353856 is an apocalyptic number.

It is an amenable number.

726684353856 is an abundant number, since it is smaller than the sum of its proper divisors (1433369981856).

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

726684353856 is an equidigital number, since it uses as much as digits as its factorization.

726684353856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46726130 (or 46726108 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 63.

The spelling of 726684353856 in words is "seven hundred twenty-six billion, six hundred eighty-four million, three hundred fifty-three thousand, eight hundred fifty-six".