2163465 has 24 divisors (see below), whose sum is σ = 3788928. Its totient is φ = 1141920.

The previous prime is 2163461. The next prime is 2163467. The reversal of 2163465 is 5643612.

2163465 is a `hidden beast` number, since 21 + 634 + 6 + 5 = 666.

It is not a de Polignac number, because 2163465 - 2² = 2163461 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 6 + 3⁶ + 4⁸ + 6² + 5 .

It is not an unprimeable number, because it can be changed into a prime (2163461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5712 + ... + 6078.

It is an arithmetic number, because the mean of its divisors is an integer number (157872).

2^2163465 is an apocalyptic number.

It is an amenable number.

2163465 is a deficient number, since it is larger than the sum of its proper divisors (1625463).

2163465 is a wasteful number, since it uses less digits than its factorization.

2163465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 506 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2163465 is about 1470.8721902327. The cubic root of 2163465 is about 129.3351659203.

It can be divided in two parts, 2163 and 465, that added together give a triangular number (2628 = T₇₂).

The spelling of 2163465 in words is "two million, one hundred sixty-three thousand, four hundred sixty-five".