11420565 has 16 divisors (see below), whose sum is σ = 19678848. Its totient is φ = 5622336.

The previous prime is 11420543. The next prime is 11420567. The reversal of 11420565 is 56502411.

11420565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11420565 - 2⁵ = 11420533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29089 + ... + 29478.

It is an arithmetic number, because the mean of its divisors is an integer number (1229928).

Almost surely, 2^11420565 is an apocalyptic number.

11420565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11420565 is a deficient number, since it is larger than the sum of its proper divisors (8258283).

11420565 is a wasteful number, since it uses less digits than its factorization.

11420565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58588.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 11420565 is about 3379.4326446905. The cubic root of 11420565 is about 225.1969633319.

Adding to 11420565 its reverse (56502411), we get a palindrome (67922976).

The spelling of 11420565 in words is "eleven million, four hundred twenty thousand, five hundred sixty-five".