2061565 has 8 divisors (see below), whose sum is σ = 2698848. Its totient is φ = 1499280.

The previous prime is 2061551. The next prime is 2061583. The reversal of 2061565 is 5651602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2061565 - 2⁵ = 2061533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18687 + ... + 18796.

It is an arithmetic number, because the mean of its divisors is an integer number (337356).

2^2061565 is an apocalyptic number.

It is an amenable number.

2061565 is a deficient number, since it is larger than the sum of its proper divisors (637283).

2061565 is a wasteful number, since it uses less digits than its factorization.

2061565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37499.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2061565 is about 1435.8150995166. The cubic root of 2061565 is about 127.2718462369.

It can be divided in two parts, 206 and 1565, that added together give a palindrome (1771).

The spelling of 2061565 in words is "two million, sixty-one thousand, five hundred sixty-five".