726554291 has 4 divisors (see below), whose sum is σ = 758143632. Its totient is φ = 694964952.

The previous prime is 726554287. The next prime is 726554303. The reversal of 726554291 is 192455627.

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

It is a cyclic number.

It is not a de Polignac number, because 726554291 - 2² = 726554287 is a prime.

It is a super-2 number, since 2×726554291² = 1055762275541025362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726554201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15794636 + ... + 15794681.

It is an arithmetic number, because the mean of its divisors is an integer number (189535908).

Almost surely, 2^726554291 is an apocalyptic number.

726554291 is a deficient number, since it is larger than the sum of its proper divisors (31589341).

726554291 is a wasteful number, since it uses less digits than its factorization.

726554291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31589340.

The product of its digits is 151200, while the sum is 41.

The square root of 726554291 is about 26954.6710423259. The cubic root of 726554291 is about 898.9924077651.

The spelling of 726554291 in words is "seven hundred twenty-six million, five hundred fifty-four thousand, two hundred ninety-one".