727920863 has 4 divisors (see below), whose sum is σ = 731987640. Its totient is φ = 723854088.

The previous prime is 727920829. The next prime is 727920871. The reversal of 727920863 is 368029727.

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 727920863 - 2¹² = 727916767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727923863) 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, 2033120 + ... + 2033477.

It is an arithmetic number, because the mean of its divisors is an integer number (182996910).

Almost surely, 2^727920863 is an apocalyptic number.

727920863 is a deficient number, since it is larger than the sum of its proper divisors (4066777).

727920863 is a wasteful number, since it uses less digits than its factorization.

727920863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066776.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 727920863 is about 26980.0085804286. The cubic root of 727920863 is about 899.5556913911. Note that the first 3 decimals are identical.

The spelling of 727920863 in words is "seven hundred twenty-seven million, nine hundred twenty thousand, eight hundred sixty-three".