2665380 has 48 divisors (see below), whose sum is σ = 7709184. Its totient is φ = 687360.

The previous prime is 2665373. The next prime is 2665387. The reversal of 2665380 is 835662.

It is an interprime number because it is at equal distance from previous prime (2665373) and next prime (2665387).

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

It is not an unprimeable number, because it can be changed into a prime (2665387) 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, 1144 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (160608).

2^2665380 is an apocalyptic number.

2665380 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 2665380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3854592).

2665380 is an abundant number, since it is smaller than the sum of its proper divisors (5043804).

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

2665380 is a wasteful number, since it uses less digits than its factorization.

2665380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476 (or 1474 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2665380 is about 1632.5991547223. The cubic root of 2665380 is about 138.6499481611.

The spelling of 2665380 in words is "two million, six hundred sixty-five thousand, three hundred eighty".