726670243 has 8 divisors (see below), whose sum is σ = 799219008. Its totient is φ = 656500224.

The previous prime is 726670237. The next prime is 726670249. The reversal of 726670243 is 342076627.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (726670237) and next prime (726670249).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726670243 - 2¹⁷ = 726539171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726670249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594046 + ... + 595267.

It is an arithmetic number, because the mean of its divisors is an integer number (99902376).

Almost surely, 2^726670243 is an apocalyptic number.

726670243 is a deficient number, since it is larger than the sum of its proper divisors (72548765).

726670243 is a wasteful number, since it uses less digits than its factorization.

726670243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189373.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 726670243 is about 26956.8218267659. The cubic root of 726670243 is about 899.0402291159.

The spelling of 726670243 in words is "seven hundred twenty-six million, six hundred seventy thousand, two hundred forty-three".