717287423 has 4 divisors (see below), whose sum is σ = 717522720. Its totient is φ = 717052128.

The previous prime is 717287419. The next prime is 717287489. The reversal of 717287423 is 324782717.

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 717287423 - 2² = 717287419 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 (717287413) 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, 113015 + ... + 119192.

It is an arithmetic number, because the mean of its divisors is an integer number (179380680).

Almost surely, 2^717287423 is an apocalyptic number.

717287423 is a deficient number, since it is larger than the sum of its proper divisors (235297).

717287423 is a wasteful number, since it uses less digits than its factorization.

717287423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235296.

The product of its digits is 131712, while the sum is 41.

The square root of 717287423 is about 26782.2221445495. Note that the first 3 decimals coincide. The cubic root of 717287423 is about 895.1539628807.

The spelling of 717287423 in words is "seven hundred seventeen million, two hundred eighty-seven thousand, four hundred twenty-three".