726789287 has 16 divisors (see below), whose sum is σ = 880725312. Its totient is φ = 585484800.

The previous prime is 726789277. The next prime is 726789293. The reversal of 726789287 is 782987627.

It is a cyclic number.

It is not a de Polignac number, because 726789287 - 2⁶ = 726789223 is a prime.

It is a super-3 number, since 3×726789287³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726789277) 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 15 ways as a sum of consecutive naturals, for example, 88037 + ... + 95937.

It is an arithmetic number, because the mean of its divisors is an integer number (55045332).

Almost surely, 2^726789287 is an apocalyptic number.

726789287 is a deficient number, since it is larger than the sum of its proper divisors (153936025).

726789287 is a wasteful number, since it uses less digits than its factorization.

726789287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8698.

The product of its digits is 4741632, while the sum is 56.

The square root of 726789287 is about 26959.0297859548. The cubic root of 726789287 is about 899.0893203886.

The spelling of 726789287 in words is "seven hundred twenty-six million, seven hundred eighty-nine thousand, two hundred eighty-seven".