1066365 has 20 divisors (see below), whose sum is σ = 1912284. Its totient is φ = 568512.

The previous prime is 1066343. The next prime is 1066367. The reversal of 1066365 is 5636601.

It can be written as a sum of positive squares in 2 ways, for example, as 272484 + 793881 = 522^2 + 891^2 .

It is not a de Polignac number, because 1066365 - 2⁵ = 1066333 is a prime.

It is a super-2 number, since 2×1066365² = 2274268626450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066367) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 912 + ... + 1721.

2^1066365 is an apocalyptic number.

1066365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066365 is a deficient number, since it is larger than the sum of its proper divisors (845919).

1066365 is an equidigital number, since it uses as much as digits as its factorization.

1066365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 2641 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1066365 is about 1032.6495049144. The cubic root of 1066365 is about 102.1649579938.

It can be divided in two parts, 1066 and 365, that added together give a triangular number (1431 = T₅₃).

The spelling of 1066365 in words is "one million, sixty-six thousand, three hundred sixty-five".