726757873 has 2 divisors, whose sum is σ = 726757874. Its totient is φ = 726757872.

The previous prime is 726757861. The next prime is 726757883. The reversal of 726757873 is 378757627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363588624 + 363169249 = 19068^2 + 19057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726757873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 726757873.

It is not a weakly prime, because it can be changed into another prime (726757883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363378936 + 363378937.

It is an arithmetic number, because the mean of its divisors is an integer number (363378937).

Almost surely, 2^726757873 is an apocalyptic number.

It is an amenable number.

726757873 is a deficient number, since it is larger than the sum of its proper divisors (1).

726757873 is an equidigital number, since it uses as much as digits as its factorization.

726757873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3457440, while the sum is 52.

The square root of 726757873 is about 26958.4471548344. The cubic root of 726757873 is about 899.0763664283.

The spelling of 726757873 in words is "seven hundred twenty-six million, seven hundred fifty-seven thousand, eight hundred seventy-three".