1665230 has 16 divisors (see below), whose sum is σ = 3425760. Its totient is φ = 570912.

The previous prime is 1665221. The next prime is 1665233. The reversal of 1665230 is 325661.

1665230 = T₁₂₃ + T₁₂₄ + ... + T₂₂₇.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1665196 and 1665205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11825 + ... + 11964.

It is an arithmetic number, because the mean of its divisors is an integer number (214110).

2^1665230 is an apocalyptic number.

1665230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1665230 is an abundant number, since it is smaller than the sum of its proper divisors (1760530).

1665230 is a wasteful number, since it uses less digits than its factorization.

1665230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23803.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1665230 is about 1290.4379101685. The cubic root of 1665230 is about 118.5290332227.

The spelling of 1665230 in words is "one million, six hundred sixty-five thousand, two hundred thirty".