726666245 has 24 divisors (see below), whose sum is σ = 904460256. Its totient is φ = 560380128.

The previous prime is 726666203. The next prime is 726666263. The reversal of 726666245 is 542666627.

It is not a de Polignac number, because 726666245 - 2⁶ = 726666181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726666196 and 726666205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 766862 + ... + 767808.

It is an arithmetic number, because the mean of its divisors is an integer number (37685844).

Almost surely, 2^726666245 is an apocalyptic number.

It is an amenable number.

726666245 is a deficient number, since it is larger than the sum of its proper divisors (177794011).

726666245 is an equidigital number, since it uses as much as digits as its factorization.

726666245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1078 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The square root of 726666245 is about 26956.7476710378. The cubic root of 726666245 is about 899.0385803307.

The spelling of 726666245 in words is "seven hundred twenty-six million, six hundred sixty-six thousand, two hundred forty-five".