1361986 has 4 divisors (see below), whose sum is σ = 2042982. Its totient is φ = 680992.

The previous prime is 1361963. The next prime is 1361999. The reversal of 1361986 is 6891631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 4761 = 1165^2 + 69^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340495 + ... + 340498.

2^1361986 is an apocalyptic number.

1361986 is a deficient number, since it is larger than the sum of its proper divisors (680996).

1361986 is an equidigital number, since it uses as much as digits as its factorization.

1361986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680995.

The product of its digits is 7776, while the sum is 34.

The square root of 1361986 is about 1167.0415588144. The cubic root of 1361986 is about 110.8470691075.

The spelling of 1361986 in words is "one million, three hundred sixty-one thousand, nine hundred eighty-six".