717421068 has 72 divisors (see below), whose sum is σ = 2231986848. Its totient is φ = 189209088.

The previous prime is 717421051. The next prime is 717421093. The reversal of 717421068 is 860124717.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106221 + ... + 112772.

Almost surely, 2^717421068 is an apocalyptic number.

717421068 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

717421068 is an abundant number, since it is smaller than the sum of its proper divisors (1514565780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

717421068 is a wasteful number, since it uses less digits than its factorization.

717421068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219023 (or 219018 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 717421068 is about 26784.7170602939. The cubic root of 717421068 is about 895.2095544601.

The spelling of 717421068 in words is "seven hundred seventeen million, four hundred twenty-one thousand, sixty-eight".