2655540 has 36 divisors (see below), whose sum is σ = 8055684. Its totient is φ = 708096.

The previous prime is 2655539. The next prime is 2655563. The reversal of 2655540 is 455562.

2655540 is a `hidden beast` number, since 2 + 655 + 5 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 1527696 = 1062^2 + 1236^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7197 + ... + 7556.

It is an arithmetic number, because the mean of its divisors is an integer number (223769).

2^2655540 is an apocalyptic number.

2655540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2655540 is an abundant number, since it is smaller than the sum of its proper divisors (5400144).

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

2655540 is a wasteful number, since it uses less digits than its factorization.

2655540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14768 (or 14763 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2655540 is about 1629.5827686865. The cubic root of 2655540 is about 138.4791160021.

The spelling of 2655540 in words is "two million, six hundred fifty-five thousand, five hundred forty".