68999786 has 8 divisors (see below), whose sum is σ = 104566980. Its totient is φ = 34144128.

The previous prime is 68999779. The next prime is 68999789. The reversal of 68999786 is 68799986.

It can be written as a sum of positive squares in 2 ways, for example, as 65691025 + 3308761 = 8105^2 + 1819^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68999789) 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, 177641 + ... + 178028.

Almost surely, 2^68999786 is an apocalyptic number.

68999786 is a deficient number, since it is larger than the sum of its proper divisors (35567194).

68999786 is a wasteful number, since it uses less digits than its factorization.

68999786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355768.

The product of its digits is 11757312, while the sum is 62.

The square root of 68999786 is about 8306.6109816218. The cubic root of 68999786 is about 410.1561689432.

The spelling of 68999786 in words is "sixty-eight million, nine hundred ninety-nine thousand, seven hundred eighty-six".