2164680 has 96 divisors (see below), whose sum is σ = 8049600. Its totient is φ = 494208.

The previous prime is 2164639. The next prime is 2164681. The reversal of 2164680 is 864612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2091 + ... + 2949.

It is an arithmetic number, because the mean of its divisors is an integer number (83850).

2^2164680 is an apocalyptic number.

2164680 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 2164680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4024800).

2164680 is an abundant number, since it is smaller than the sum of its proper divisors (5884920).

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

2164680 is a wasteful number, since it uses less digits than its factorization.

2164680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2164680 is about 1471.2851525112. The cubic root of 2164680 is about 129.3593728937.

The spelling of 2164680 in words is "two million, one hundred sixty-four thousand, six hundred eighty".