717212147 has 2 divisors, whose sum is σ = 717212148. Its totient is φ = 717212146.

The previous prime is 717212131. The next prime is 717212149. The reversal of 717212147 is 741212717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 717212147 - 2⁴ = 717212131 is a prime.

Together with 717212149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (717212149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358606073 + 358606074.

It is an arithmetic number, because the mean of its divisors is an integer number (358606074).

Almost surely, 2^717212147 is an apocalyptic number.

717212147 is a deficient number, since it is larger than the sum of its proper divisors (1).

717212147 is an equidigital number, since it uses as much as digits as its factorization.

717212147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5488, while the sum is 32.

The square root of 717212147 is about 26780.8167724586. The cubic root of 717212147 is about 895.1226476948.

The spelling of 717212147 in words is "seven hundred seventeen million, two hundred twelve thousand, one hundred forty-seven".