717252427 has 4 divisors (see below), whose sum is σ = 733932760. Its totient is φ = 700572096.

The previous prime is 717252407. The next prime is 717252433. The reversal of 717252427 is 724252717.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717252427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (717252407) 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, 8340102 + ... + 8340187.

It is an arithmetic number, because the mean of its divisors is an integer number (183483190).

Almost surely, 2^717252427 is an apocalyptic number.

717252427 is a deficient number, since it is larger than the sum of its proper divisors (16680333).

717252427 is a wasteful number, since it uses less digits than its factorization.

717252427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16680332.

The product of its digits is 54880, while the sum is 37.

The square root of 717252427 is about 26781.5687927351. The cubic root of 717252427 is about 895.1394046453.

The spelling of 717252427 in words is "seven hundred seventeen million, two hundred fifty-two thousand, four hundred twenty-seven".