68799650 has 24 divisors (see below), whose sum is σ = 131429460. Its totient is φ = 26775360.

The previous prime is 68799637. The next prime is 68799659. The reversal of 68799650 is 5699786.

It can be written as a sum of positive squares in 6 ways, for example, as 54184321 + 14615329 = 7361^2 + 3823^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (68799659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16745 + ... + 20444.

Almost surely, 2^68799650 is an apocalyptic number.

68799650 is a deficient number, since it is larger than the sum of its proper divisors (62629810).

68799650 is a wasteful number, since it uses less digits than its factorization.

68799650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37238 (or 37233 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 68799650 is about 8294.5554431808. Note that the first 3 decimals coincide. The cubic root of 68799650 is about 409.7592280576.

The spelling of 68799650 in words is "sixty-eight million, seven hundred ninety-nine thousand, six hundred fifty".