1382866 has 4 divisors (see below), whose sum is σ = 2074302. Its totient is φ = 691432.

The previous prime is 1382861. The next prime is 1382891. The reversal of 1382866 is 6682831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6682831 = 197 ⋅33923.

It can be written as a sum of positive squares in only one way, i.e., 1334025 + 48841 = 1155^2 + 221^2 .

It is not an unprimeable number, because it can be changed into a prime (1382861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345715 + ... + 345718.

2^1382866 is an apocalyptic number.

1382866 is a deficient number, since it is larger than the sum of its proper divisors (691436).

1382866 is an equidigital number, since it uses as much as digits as its factorization.

1382866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691435.

The product of its digits is 13824, while the sum is 34.

The square root of 1382866 is about 1175.9532303625. The cubic root of 1382866 is about 111.4106478481.

The spelling of 1382866 in words is "one million, three hundred eighty-two thousand, eight hundred sixty-six".