717420863 has 4 divisors (see below), whose sum is σ = 718354560. Its totient is φ = 716487168.

The previous prime is 717420833. The next prime is 717420917. The reversal of 717420863 is 368024717.

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 717420863 - 2¹² = 717416767 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 (717420833) 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, 465695 + ... + 467232.

It is an arithmetic number, because the mean of its divisors is an integer number (179588640).

Almost surely, 2^717420863 is an apocalyptic number.

717420863 is a deficient number, since it is larger than the sum of its proper divisors (933697).

717420863 is an equidigital number, since it uses as much as digits as its factorization.

717420863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933696.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 717420863 is about 26784.7132334845. The cubic root of 717420863 is about 895.2094691927.

The spelling of 717420863 in words is "seven hundred seventeen million, four hundred twenty thousand, eight hundred sixty-three".