717672861 has 12 divisors (see below), whose sum is σ = 1046328192. Its totient is φ = 473976456.

The previous prime is 717672859. The next prime is 717672871. The reversal of 717672861 is 168276717.

It is not a de Polignac number, because 717672861 - 2¹ = 717672859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (717672871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 371661 + ... + 373586.

It is an arithmetic number, because the mean of its divisors is an integer number (87194016).

Almost surely, 2^717672861 is an apocalyptic number.

It is an amenable number.

717672861 is a deficient number, since it is larger than the sum of its proper divisors (328655331).

717672861 is a wasteful number, since it uses less digits than its factorization.

717672861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745360 (or 745357 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 717672861 is about 26789.4169589411. The cubic root of 717672861 is about 895.3142726626.

The spelling of 717672861 in words is "seven hundred seventeen million, six hundred seventy-two thousand, eight hundred sixty-one".