717127947 has 6 divisors (see below), whose sum is σ = 1035851492. Its totient is φ = 478085292.

The previous prime is 717127919. The next prime is 717127981. The reversal of 717127947 is 749721717.

It is not a de Polignac number, because 717127947 - 2⁷ = 717127819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (717127987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39840433 + ... + 39840450.

Almost surely, 2^717127947 is an apocalyptic number.

717127947 is a deficient number, since it is larger than the sum of its proper divisors (318723545).

717127947 is a wasteful number, since it uses less digits than its factorization.

717127947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79680889 (or 79680886 counting only the distinct ones).

The product of its digits is 172872, while the sum is 45.

The square root of 717127947 is about 26779.2447055551. The cubic root of 717127947 is about 895.0876174847.

The spelling of 717127947 in words is "seven hundred seventeen million, one hundred twenty-seven thousand, nine hundred forty-seven".