68211830 has 32 divisors (see below), whose sum is σ = 125411328. Its totient is φ = 26706400.

The previous prime is 68211809. The next prime is 68211883. The reversal of 68211830 is 3811286.

It is a junction number, because it is equal to n+sod(n) for n = 68211793 and 68211802.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 135359 + ... + 135861.

It is an arithmetic number, because the mean of its divisors is an integer number (3919104).

Almost surely, 2^68211830 is an apocalyptic number.

68211830 is a deficient number, since it is larger than the sum of its proper divisors (57199498).

68211830 is a wasteful number, since it uses less digits than its factorization.

68211830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 68211830 is about 8259.0453443482. The cubic root of 68211830 is about 408.5889027151.

The spelling of 68211830 in words is "sixty-eight million, two hundred eleven thousand, eight hundred thirty".