2665000 has 80 divisors (see below), whose sum is σ = 6888420. Its totient is φ = 960000.

The previous prime is 2664989. The next prime is 2665001. The reversal of 2665000 is 5662.

It can be written as a sum of positive squares in 10 ways, for example, as 1267876 + 1397124 = 1126^2 + 1182^2 .

It is not an unprimeable number, because it can be changed into a prime (2665001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64980 + ... + 65020.

2^2665000 is an apocalyptic number.

2665000 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 2665000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3444210).

2665000 is an abundant number, since it is smaller than the sum of its proper divisors (4223420).

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

2665000 is a wasteful number, since it uses less digits than its factorization.

2665000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2665000 is about 1632.4827717315. The cubic root of 2665000 is about 138.6433587962.

It can be divided in two parts, 26 and 65000, that multiplied together give a square (1690000 = 1300²).

The spelling of 2665000 in words is "two million, six hundred sixty-five thousand".