717421492 has 6 divisors (see below), whose sum is σ = 1255487618. Its totient is φ = 358710744.

The previous prime is 717421477. The next prime is 717421493. The reversal of 717421492 is 294124717.

It can be written as a sum of positive squares in only one way, i.e., 707347216 + 10074276 = 26596^2 + 3174^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (717421493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89677683 + ... + 89677690.

Almost surely, 2^717421492 is an apocalyptic number.

It is an amenable number.

717421492 is a deficient number, since it is larger than the sum of its proper divisors (538066126).

717421492 is a wasteful number, since it uses less digits than its factorization.

717421492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179355377 (or 179355375 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 717421492 is about 26784.7249752541. The cubic root of 717421492 is about 895.2097308181.

The spelling of 717421492 in words is "seven hundred seventeen million, four hundred twenty-one thousand, four hundred ninety-two".