726722547 has 4 divisors (see below), whose sum is σ = 968963400. Its totient is φ = 484481696.

The previous prime is 726722533. The next prime is 726722561. The reversal of 726722547 is 745227627.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (726722533) and next prime (726722561).

It is a cyclic number.

It is not a de Polignac number, because 726722547 - 2⁴ = 726722531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 726722499 and 726722508.

It is not an unprimeable number, because it can be changed into a prime (726722527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121120422 + ... + 121120427.

It is an arithmetic number, because the mean of its divisors is an integer number (242240850).

Almost surely, 2^726722547 is an apocalyptic number.

726722547 is a deficient number, since it is larger than the sum of its proper divisors (242240853).

726722547 is a wasteful number, since it uses less digits than its factorization.

726722547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242240852.

The product of its digits is 329280, while the sum is 42.

The square root of 726722547 is about 26957.7919533481. The cubic root of 726722547 is about 899.0617988593.

The spelling of 726722547 in words is "seven hundred twenty-six million, seven hundred twenty-two thousand, five hundred forty-seven".