2061816 has 16 divisors (see below), whose sum is σ = 5154600. Its totient is φ = 687264.

The previous prime is 2061793. The next prime is 2061847. The reversal of 2061816 is 6181602.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 85909 = 2061816 / (2 + 0 + 6 + 1 + 8 + 1 + 6).

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, 42931 + ... + 42978.

2^2061816 is an apocalyptic number.

It is an amenable number.

2061816 is an abundant number, since it is smaller than the sum of its proper divisors (3092784).

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

2061816 is a wasteful number, since it uses less digits than its factorization.

2061816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85918 (or 85914 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2061816 is about 1435.9025036541. The cubic root of 2061816 is about 127.2770112349.

The spelling of 2061816 in words is "two million, sixty-one thousand, eight hundred sixteen".