2665240 has 32 divisors (see below), whose sum is σ = 6259680. Its totient is φ = 1019392.

The previous prime is 2665237. The next prime is 2665241. The reversal of 2665240 is 425662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (195615).

2^2665240 is an apocalyptic number.

2665240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665240 is an abundant number, since it is smaller than the sum of its proper divisors (3594440).

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

2665240 is a wasteful number, since it uses less digits than its factorization.

2665240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931 (or 2927 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2665240 is about 1632.5562777436. The cubic root of 2665240 is about 138.6475205732.

The spelling of 2665240 in words is "two million, six hundred sixty-five thousand, two hundred forty".