726738251 has 2 divisors, whose sum is σ = 726738252. Its totient is φ = 726738250.

The previous prime is 726738241. The next prime is 726738263. The reversal of 726738251 is 152837627.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 726738251 - 2¹⁴ = 726721867 is a prime.

It is a Chen prime.

It is equal to p_37564466 and since 726738251 and 37564466 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 726738199 and 726738208.

It is not a weakly prime, because it can be changed into another prime (726738241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363369125 + 363369126.

It is an arithmetic number, because the mean of its divisors is an integer number (363369126).

Almost surely, 2^726738251 is an apocalyptic number.

726738251 is a deficient number, since it is larger than the sum of its proper divisors (1).

726738251 is an equidigital number, since it uses as much as digits as its factorization.

726738251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 726738251 is about 26958.0832219207. The cubic root of 726738251 is about 899.0682748589.

The spelling of 726738251 in words is "seven hundred twenty-six million, seven hundred thirty-eight thousand, two hundred fifty-one".