726257 has 12 divisors (see below), whose sum is σ = 884160. Its totient is φ = 584256.

The previous prime is 726221. The next prime is 726287. The reversal of 726257 is 752627.

It is a happy number.

726257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-726257 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726257.

It is not an unprimeable number, because it can be changed into a prime (726287) 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, 1844 + ... + 2202.

It is an arithmetic number, because the mean of its divisors is an integer number (73680).

2⁷²⁶²⁵⁷ is an apocalyptic number.

It is an amenable number.

726257 is a deficient number, since it is larger than the sum of its proper divisors (157903).

726257 is a wasteful number, since it uses less digits than its factorization.

726257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 383 counting only the distinct ones).

The product of its digits is 5880, while the sum is 29.

The square root of 726257 is about 852.2071344456. The cubic root of 726257 is about 89.8869774666.

The spelling of 726257 in words is "seven hundred twenty-six thousand, two hundred fifty-seven".