2665500 has 48 divisors (see below), whose sum is σ = 7766304. Its totient is φ = 710400.

The previous prime is 2665499. The next prime is 2665501. The reversal of 2665500 is 55662.

It is an interprime number because it is at equal distance from previous prime (2665499) and next prime (2665501).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612 + ... + 2388.

It is an arithmetic number, because the mean of its divisors is an integer number (161798).

2^2665500 is an apocalyptic number.

2665500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3883152).

2665500 is an abundant number, since it is smaller than the sum of its proper divisors (5100804).

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

2665500 is a wasteful number, since it uses less digits than its factorization.

2665500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799 (or 1787 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2665500 is about 1632.6359055221. The cubic root of 2665500 is about 138.6520288830.

It can be divided in two parts, 2 and 665500, that multiplied together give a cube (1331000 = 110³).

The spelling of 2665500 in words is "two million, six hundred sixty-five thousand, five hundred".