726740327670 has 128 divisors (see below), whose sum is σ = 2098839859200. Its totient is φ = 157325680512.

The previous prime is 726740327669. The next prime is 726740327683. The reversal of 726740327670 is 76723047627.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15565621 + ... + 15612239.

It is an arithmetic number, because the mean of its divisors is an integer number (16397186400).

Almost surely, 2^726740327670 is an apocalyptic number.

726740327670 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 726740327670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049419929600).

726740327670 is an abundant number, since it is smaller than the sum of its proper divisors (1372099531530).

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

726740327670 is a wasteful number, since it uses less digits than its factorization.

726740327670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50562.

The product of its (nonzero) digits is 4148928, while the sum is 51.

The spelling of 726740327670 in words is "seven hundred twenty-six billion, seven hundred forty million, three hundred twenty-seven thousand, six hundred seventy".