68909966 has 8 divisors (see below), whose sum is σ = 103555560. Its totient is φ = 34391448.

The previous prime is 68909927. The next prime is 68909989. The reversal of 68909966 is 66990986.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30401 + ... + 32588.

It is an arithmetic number, because the mean of its divisors is an integer number (12944445).

Almost surely, 2^68909966 is an apocalyptic number.

68909966 is a deficient number, since it is larger than the sum of its proper divisors (34645594).

68909966 is a wasteful number, since it uses less digits than its factorization.

68909966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63538.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 68909966 is about 8301.2026839489. The cubic root of 68909966 is about 409.9781189988.

The spelling of 68909966 in words is "sixty-eight million, nine hundred nine thousand, nine hundred sixty-six".