1268986 has 4 divisors (see below), whose sum is σ = 1903482. Its totient is φ = 634492.

The previous prime is 1268963. The next prime is 1269001. The reversal of 1268986 is 6898621.

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., 1221025 + 47961 = 1105^2 + 219^2 .

It is a super-2 number, since 2×1268986² = 3220650936392, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317245 + ... + 317248.

2^1268986 is an apocalyptic number.

1268986 is a deficient number, since it is larger than the sum of its proper divisors (634496).

1268986 is an equidigital number, since it uses as much as digits as its factorization.

1268986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634495.

The product of its digits is 41472, while the sum is 40.

The square root of 1268986 is about 1126.4927873715. The cubic root of 1268986 is about 108.2643842659.

The spelling of 1268986 in words is "one million, two hundred sixty-eight thousand, nine hundred eighty-six".