68166730 has 16 divisors (see below), whose sum is σ = 124254720. Its totient is φ = 26921232.

The previous prime is 68166727. The next prime is 68166751. The reversal of 68166730 is 3766186.

It is a self number, because there is not a number n which added to its sum of digits gives 68166730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42354 + ... + 43933.

It is an arithmetic number, because the mean of its divisors is an integer number (7765920).

Almost surely, 2^68166730 is an apocalyptic number.

68166730 is a deficient number, since it is larger than the sum of its proper divisors (56087990).

68166730 is a wasteful number, since it uses less digits than its factorization.

68166730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86373.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 68166730 is about 8256.3145531163. The cubic root of 68166730 is about 408.4988331859.

The spelling of 68166730 in words is "sixty-eight million, one hundred sixty-six thousand, seven hundred thirty".