1359866 has 4 divisors (see below), whose sum is σ = 2039802. Its totient is φ = 679932.

The previous prime is 1359859. The next prime is 1359871. The reversal of 1359866 is 6689531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6689531 = 769 ⋅8699.

It can be written as a sum of positive squares in only one way, i.e., 1311025 + 48841 = 1145^2 + 221^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339965 + ... + 339968.

2^1359866 is an apocalyptic number.

1359866 is a deficient number, since it is larger than the sum of its proper divisors (679936).

1359866 is an equidigital number, since it uses as much as digits as its factorization.

1359866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679935.

The product of its digits is 38880, while the sum is 38.

The square root of 1359866 is about 1166.1329255278. The cubic root of 1359866 is about 110.7895262204.

It can be divided in two parts, 135 and 9866, that added together give a palindrome (10001).

The spelling of 1359866 in words is "one million, three hundred fifty-nine thousand, eight hundred sixty-six".