1263679682 has 8 divisors (see below), whose sum is σ = 1897562700. Its totient is φ = 631158784.

The previous prime is 1263679663. The next prime is 1263679687. The reversal of 1263679682 is 2869763621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 873261601 + 390418081 = 29551^2 + 19759^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1263679682² = 3193772677399242248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1263679682.

It is not an unprimeable number, because it can be changed into a prime (1263679687) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 338207 + ... + 341922.

Almost surely, 2^1263679682 is an apocalyptic number.

1263679682 is a deficient number, since it is larger than the sum of its proper divisors (633883018).

1263679682 is an equidigital number, since it uses as much as digits as its factorization.

1263679682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681060.

The product of its digits is 1306368, while the sum is 50.

The square root of 1263679682 is about 35548.2725599993. The cubic root of 1263679682 is about 1081.1326942270.

The spelling of 1263679682 in words is "one billion, two hundred sixty-three million, six hundred seventy-nine thousand, six hundred eighty-two".