2686320 has 240 divisors, whose sum is σ = 11374272. Its totient is φ = 552960.

The previous prime is 2686319. The next prime is 2686337. The reversal of 2686320 is 236862.

2686320 is a `hidden beast` number, since 26 + 8 + 632 + 0 = 666.

It is a Cunningham number, because it is equal to 1639²-1.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65500 + ... + 65540.

2^2686320 is an apocalyptic number.

2686320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2686320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5687136).

2686320 is an abundant number, since it is smaller than the sum of its proper divisors (8687952).

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

2686320 is a wasteful number, since it uses less digits than its factorization.

2686320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2686320 is about 1638.9996949359. Note that the first 3 decimals coincide. The cubic root of 2686320 is about 139.0120928699.

The spelling of 2686320 in words is "two million, six hundred eighty-six thousand, three hundred twenty".