2665040 has 40 divisors (see below), whose sum is σ = 7082880. Its totient is φ = 913536.

The previous prime is 2665037. The next prime is 2665043. The reversal of 2665040 is 405662.

It is an interprime number because it is at equal distance from previous prime (2665037) and next prime (2665043).

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 2664997 and 2665015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665043) 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, 1820 + ... + 2939.

It is an arithmetic number, because the mean of its divisors is an integer number (177072).

2^2665040 is an apocalyptic number.

2665040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665040 is an abundant number, since it is smaller than the sum of its proper divisors (4417840).

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

2665040 is a wasteful number, since it uses less digits than its factorization.

2665040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779 (or 4773 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2665040 is about 1632.4950229633. The cubic root of 2665040 is about 138.6440524430.

The spelling of 2665040 in words is "two million, six hundred sixty-five thousand, forty".