2061385 has 4 divisors (see below), whose sum is σ = 2473668. Its totient is φ = 1649104.

The previous prime is 2061383. The next prime is 2061391. The reversal of 2061385 is 5831602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 952576 + 1108809 = 976^2 + 1053^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061385 - 2¹ = 2061383 is a prime.

It is a Duffinian number.

2061385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2061383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206134 + ... + 206143.

It is an arithmetic number, because the mean of its divisors is an integer number (618417).

2^2061385 is an apocalyptic number.

It is an amenable number.

2061385 is a deficient number, since it is larger than the sum of its proper divisors (412283).

2061385 is an equidigital number, since it uses as much as digits as its factorization.

2061385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412282.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2061385 is about 1435.7524159826. The cubic root of 2061385 is about 127.2681419962.

Adding to 2061385 its reverse (5831602), we get a palindrome (7892987).

The spelling of 2061385 in words is "two million, sixty-one thousand, three hundred eighty-five".