2665845 has 96 divisors (see below), whose sum is σ = 6128640. Its totient is φ = 1088640.

The previous prime is 2665843. The next prime is 2665849. The reversal of 2665845 is 5485662.

It is not a de Polignac number, because 2665845 - 2¹ = 2665843 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.

Its product of digits (57600) is a multiple of the sum of its prime factors (72).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665841) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 85980 + ... + 86010.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2^2665845 is an apocalyptic number.

It is an amenable number.

2665845 is an abundant number, since it is smaller than the sum of its proper divisors (3462795).

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

2665845 is a wasteful number, since it uses less digits than its factorization.

2665845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 59 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2665845 is about 1632.7415594637. The cubic root of 2665845 is about 138.6580106108.

The spelling of 2665845 in words is "two million, six hundred sixty-five thousand, eight hundred forty-five".