726669349560 has 768 divisors, whose sum is σ = 3199448678400. Its totient is φ = 138431462400.

The previous prime is 726669349559. The next prime is 726669349573. The reversal of 726669349560 is 65943966627.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 16304827 + ... + 16349333.

It is an arithmetic number, because the mean of its divisors is an integer number (4165948800).

Almost surely, 2^726669349560 is an apocalyptic number.

726669349560 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726669349560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599724339200).

726669349560 is an abundant number, since it is smaller than the sum of its proper divisors (2472779328840).

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

726669349560 is a wasteful number, since it uses less digits than its factorization.

726669349560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44592 (or 44585 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 63.

The spelling of 726669349560 in words is "seven hundred twenty-six billion, six hundred sixty-nine million, three hundred forty-nine thousand, five hundred sixty".