1665233 has 2 divisors, whose sum is σ = 1665234. Its totient is φ = 1665232.

The previous prime is 1665221. The next prime is 1665247. The reversal of 1665233 is 3325661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1555009 + 110224 = 1247^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1665233 - 2¹² = 1661137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1665263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832616 + 832617.

It is an arithmetic number, because the mean of its divisors is an integer number (832617).

2^1665233 is an apocalyptic number.

It is an amenable number.

1665233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1665233 is an equidigital number, since it uses as much as digits as its factorization.

1665233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 1665233 is about 1290.4390725641. The cubic root of 1665233 is about 118.5291044014.

The spelling of 1665233 in words is "one million, six hundred sixty-five thousand, two hundred thirty-three".