726725670 has 64 divisors (see below), whose sum is σ = 1908976896. Its totient is φ = 175594880.

The previous prime is 726725669. The next prime is 726725677. The reversal of 726725670 is 76527627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726725677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101137 + ... + 108083.

It is an arithmetic number, because the mean of its divisors is an integer number (29827764).

Almost surely, 2^726725670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726725670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954488448).

726725670 is an abundant number, since it is smaller than the sum of its proper divisors (1182251226).

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

726725670 is a wasteful number, since it uses less digits than its factorization.

726725670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285.

The product of its (nonzero) digits is 246960, while the sum is 42.

The square root of 726725670 is about 26957.8498771694. The cubic root of 726725670 is about 899.0630867263.

The spelling of 726725670 in words is "seven hundred twenty-six million, seven hundred twenty-five thousand, six hundred seventy".