2061810 has 48 divisors (see below), whose sum is σ = 5541120. Its totient is φ = 531360.

The previous prime is 2061793. The next prime is 2061847. The reversal of 2061810 is 181602.

It is a super-2 number, since 2×2061810² = 8502120952200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2421 + ... + 3159.

It is an arithmetic number, because the mean of its divisors is an integer number (115440).

2^2061810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2061810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2770560).

2061810 is an abundant number, since it is smaller than the sum of its proper divisors (3479310).

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

2061810 is a wasteful number, since it uses less digits than its factorization.

2061810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 2061810 is about 1435.9004143742. The cubic root of 2061810 is about 127.2768877737.

It can be divided in two parts, 206 and 1810, that added together give a triangular number (2016 = T₆₃).

The spelling of 2061810 in words is "two million, sixty-one thousand, eight hundred ten".