726149 has 2 divisors, whose sum is σ = 726150. Its totient is φ = 726148.

The previous prime is 726139. The next prime is 726157. The reversal of 726149 is 941627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 37249 = 830^2 + 193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363074 + 363075.

It is an arithmetic number, because the mean of its divisors is an integer number (363075).

2⁷²⁶¹⁴⁹ is an apocalyptic number.

It is an amenable number.

726149 is a deficient number, since it is larger than the sum of its proper divisors (1).

726149 is an equidigital number, since it uses as much as digits as its factorization.

726149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 726149 is about 852.1437672130. The cubic root of 726149 is about 89.8825216175.

The spelling of 726149 in words is "seven hundred twenty-six thousand, one hundred forty-nine".