2665650 has 48 divisors (see below), whose sum is σ = 7124544. Its totient is φ = 655680.

The previous prime is 2665627. The next prime is 2665667. The reversal of 2665650 is 565662.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1267 + ... + 2633.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

2^2665650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3562272).

2665650 is an abundant number, since it is smaller than the sum of its proper divisors (4458894).

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

2665650 is a wasteful number, since it uses less digits than its factorization.

2665650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2665650 is about 1632.6818428586. The cubic root of 2665650 is about 138.6546296977.

The spelling of 2665650 in words is "two million, six hundred sixty-five thousand, six hundred fifty".