1716320685 has 8 divisors (see below), whose sum is σ = 2746113120. Its totient is φ = 915371024.

The previous prime is 1716320657. The next prime is 1716320687. The reversal of 1716320685 is 5860236171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1716320685 - 2⁵ = 1716320653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1716320687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57210675 + ... + 57210704.

It is an arithmetic number, because the mean of its divisors is an integer number (343264140).

Almost surely, 2^1716320685 is an apocalyptic number.

1716320685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1716320685 is a deficient number, since it is larger than the sum of its proper divisors (1029792435).

1716320685 is a wasteful number, since it uses less digits than its factorization.

1716320685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114421387.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1716320685 is about 41428.5008780187. The cubic root of 1716320685 is about 1197.2903409228.

The spelling of 1716320685 in words is "one billion, seven hundred sixteen million, three hundred twenty thousand, six hundred eighty-five".