726157 has 2 divisors, whose sum is σ = 726158. Its totient is φ = 726156.

The previous prime is 726149. The next prime is 726163. The reversal of 726157 is 751627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 373321 + 352836 = 611^2 + 594^2 .

It is an emirp because it is prime and its reverse (751627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 726157 - 2³ = 726149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363078 + 363079.

It is an arithmetic number, because the mean of its divisors is an integer number (363079).

2⁷²⁶¹⁵⁷ is an apocalyptic number.

It is an amenable number.

726157 is a deficient number, since it is larger than the sum of its proper divisors (1).

726157 is an equidigital number, since it uses as much as digits as its factorization.

726157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2940, while the sum is 28.

The square root of 726157 is about 852.1484612437. The cubic root of 726157 is about 89.8828516956.

The spelling of 726157 in words is "seven hundred twenty-six thousand, one hundred fifty-seven".