1366065 has 20 divisors (see below), whose sum is σ = 2449524. Its totient is φ = 728352.

The previous prime is 1366031. The next prime is 1366087. The reversal of 1366065 is 5606631.

It can be written as a sum of positive squares in 2 ways, for example, as 1034289 + 331776 = 1017^2 + 576^2 .

It is not a de Polignac number, because 1366065 - 2¹¹ = 1364017 is a prime.

It is a super-2 number, since 2×1366065² = 3732267168450, which contains 22 as substring.

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

1366065 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1282 + ... + 2091.

2^1366065 is an apocalyptic number.

1366065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1366065 is a deficient number, since it is larger than the sum of its proper divisors (1083459).

1366065 is an equidigital number, since it uses as much as digits as its factorization.

1366065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390 (or 3381 counting only the distinct ones).

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

The square root of 1366065 is about 1168.7878336122. The cubic root of 1366065 is about 110.9576171281.

The spelling of 1366065 in words is "one million, three hundred sixty-six thousand, sixty-five".