726091776 has 144 divisors (see below), whose sum is σ = 2176246800. Its totient is φ = 241864704.

The previous prime is 726091771. The next prime is 726091781. The reversal of 726091776 is 677190627.

It is an interprime number because it is at equal distance from previous prime (726091771) and next prime (726091781).

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (726091771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 496935 + ... + 498393.

It is an arithmetic number, because the mean of its divisors is an integer number (15112825).

Almost surely, 2^726091776 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 726091776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1088123400).

726091776 is an abundant number, since it is smaller than the sum of its proper divisors (1450155024).

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

726091776 is an equidigital number, since it uses as much as digits as its factorization.

726091776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 726091776 is about 26946.0901802098. The cubic root of 726091776 is about 898.8016049854.

The spelling of 726091776 in words is "seven hundred twenty-six million, ninety-one thousand, seven hundred seventy-six".