1828665 has 12 divisors (see below), whose sum is σ = 3169764. Its totient is φ = 975264.

The previous prime is 1828663. The next prime is 1828667. The reversal of 1828665 is 5668281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1828663) and next prime (1828667).

It can be written as a sum of positive squares in 2 ways, for example, as 210681 + 1617984 = 459^2 + 1272^2 .

It is not a de Polignac number, because 1828665 - 2¹ = 1828663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1828663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20274 + ... + 20363.

It is an arithmetic number, because the mean of its divisors is an integer number (264147).

2^1828665 is an apocalyptic number.

1828665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1828665 is a deficient number, since it is larger than the sum of its proper divisors (1341099).

1828665 is a wasteful number, since it uses less digits than its factorization.

1828665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40648 (or 40645 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1828665 is about 1352.2814056253. The cubic root of 1828665 is about 122.2863692963.

The spelling of 1828665 in words is "one million, eight hundred twenty-eight thousand, six hundred sixty-five".