726726749 has 8 divisors (see below), whose sum is σ = 832143168. Its totient is φ = 621709920.

The previous prime is 726726743. The next prime is 726726751. The reversal of 726726749 is 947627627.

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 726726749 - 2¹² = 726722653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726726697 and 726726706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726726743) 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, 95987 + ... + 103280.

It is an arithmetic number, because the mean of its divisors is an integer number (104017896).

Almost surely, 2^726726749 is an apocalyptic number.

It is an amenable number.

726726749 is a deficient number, since it is larger than the sum of its proper divisors (105416419).

726726749 is a wasteful number, since it uses less digits than its factorization.

726726749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199795.

The product of its digits is 1778112, while the sum is 50.

The square root of 726726749 is about 26957.8698898856. The cubic root of 726726749 is about 899.0635316849.

The spelling of 726726749 in words is "seven hundred twenty-six million, seven hundred twenty-six thousand, seven hundred forty-nine".