2161716 has 24 divisors (see below), whose sum is σ = 5081664. Its totient is φ = 715200.

The previous prime is 2161699. The next prime is 2161729. The reversal of 2161716 is 6171612.

2161716 = T₈₈ + T₈₉ + ... + T₂₃₈.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216 + ... + 2408.

It is an arithmetic number, because the mean of its divisors is an integer number (211736).

2^2161716 is an apocalyptic number.

It is an amenable number.

2161716 is an abundant number, since it is smaller than the sum of its proper divisors (2919948).

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

2161716 is a wasteful number, since it uses less digits than its factorization.

2161716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1349 counting only the distinct ones).

The product of its digits is 504, while the sum is 24.

The square root of 2161716 is about 1470.2775248231. The cubic root of 2161716 is about 129.3003039143.

The spelling of 2161716 in words is "two million, one hundred sixty-one thousand, seven hundred sixteen".