2653965 has 20 divisors (see below), whose sum is σ = 4758204. Its totient is φ = 1415232.

The previous prime is 2653957. The next prime is 2653967. The reversal of 2653965 is 5693562.

2653965 is a `hidden beast` number, since 265 + 396 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 927369 + 1726596 = 963^2 + 1314^2 .

It is not a de Polignac number, because 2653965 - 2³ = 2653957 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2653967) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2872 + ... + 3681.

2^2653965 is an apocalyptic number.

It is an amenable number.

2653965 is a deficient number, since it is larger than the sum of its proper divisors (2104239).

2653965 is an equidigital number, since it uses as much as digits as its factorization.

2653965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570 (or 6561 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 2653965 is about 1629.0994444785. The cubic root of 2653965 is about 138.4517332800.

The spelling of 2653965 in words is "two million, six hundred fifty-three thousand, nine hundred sixty-five".