717670423 has 2 divisors, whose sum is σ = 717670424. Its totient is φ = 717670422.

The previous prime is 717670417. The next prime is 717670439. The reversal of 717670423 is 324076717.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-717670423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (717670493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358835211 + 358835212.

It is an arithmetic number, because the mean of its divisors is an integer number (358835212).

Almost surely, 2^717670423 is an apocalyptic number.

717670423 is a deficient number, since it is larger than the sum of its proper divisors (1).

717670423 is an equidigital number, since it uses as much as digits as its factorization.

717670423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 717670423 is about 26789.3714558591. The cubic root of 717670423 is about 895.3132588401.

The spelling of 717670423 in words is "seven hundred seventeen million, six hundred seventy thousand, four hundred twenty-three".