68919766 has 8 divisors (see below), whose sum is σ = 105579360. Its totient is φ = 33726648.

The previous prime is 68919757. The next prime is 68919787. The reversal of 68919766 is 66791986.

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 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, 366501 + ... + 366688.

It is an arithmetic number, because the mean of its divisors is an integer number (13197420).

Almost surely, 2^68919766 is an apocalyptic number.

68919766 is a deficient number, since it is larger than the sum of its proper divisors (36659594).

68919766 is a wasteful number, since it uses less digits than its factorization.

68919766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733238.

The product of its digits is 979776, while the sum is 52.

The square root of 68919766 is about 8301.7929388777. The cubic root of 68919766 is about 409.9975530292.

The spelling of 68919766 in words is "sixty-eight million, nine hundred nineteen thousand, seven hundred sixty-six".