716644871 has 4 divisors (see below), whose sum is σ = 722287872. Its totient is φ = 711001872.

The previous prime is 716644849. The next prime is 716644889. The reversal of 716644871 is 178446617.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 716644871 - 2¹⁴ = 716628487 is a prime.

It is a super-2 number, since 2×716644871² = 1027159742261213282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716644811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2821310 + ... + 2821563.

It is an arithmetic number, because the mean of its divisors is an integer number (180571968).

Almost surely, 2^716644871 is an apocalyptic number.

716644871 is a deficient number, since it is larger than the sum of its proper divisors (5643001).

716644871 is a wasteful number, since it uses less digits than its factorization.

716644871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643000.

The product of its digits is 225792, while the sum is 44.

The square root of 716644871 is about 26770.2235889056. The cubic root of 716644871 is about 894.8865875871.

The spelling of 716644871 in words is "seven hundred sixteen million, six hundred forty-four thousand, eight hundred seventy-one".