2605340 has 12 divisors (see below), whose sum is σ = 5471256. Its totient is φ = 1042128.

The previous prime is 2605319. The next prime is 2605349. The reversal of 2605340 is 435062.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 130267 = 2605340 / (2 + 6 + 0 + 5 + 3 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605349) 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, 65114 + ... + 65153.

It is an arithmetic number, because the mean of its divisors is an integer number (455938).

2^2605340 is an apocalyptic number.

2605340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605340 is an abundant number, since it is smaller than the sum of its proper divisors (2865916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2605340 is a wasteful number, since it uses less digits than its factorization.

2605340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130276 (or 130274 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 2605340 is about 1614.1065640161. The cubic root of 2605340 is about 137.6009616617.

The spelling of 2605340 in words is "two million, six hundred five thousand, three hundred forty".