1716920 has 16 divisors (see below), whose sum is σ = 3863160. Its totient is φ = 686752.

The previous prime is 1716917. The next prime is 1716931. The reversal of 1716920 is 296171.

It is a self number, because there is not a number n which added to its sum of digits gives 1716920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21422 + ... + 21501.

2^1716920 is an apocalyptic number.

1716920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1716920 is an abundant number, since it is smaller than the sum of its proper divisors (2146240).

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

1716920 is a wasteful number, since it uses less digits than its factorization.

1716920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42934 (or 42930 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1716920 is about 1310.3129397209. The cubic root of 1716920 is about 119.7429683678.

The spelling of 1716920 in words is "one million, seven hundred sixteen thousand, nine hundred twenty".