68211385 has 8 divisors (see below), whose sum is σ = 89294976. Its totient is φ = 49608240.

The previous prime is 68211383. The next prime is 68211397. The reversal of 68211385 is 58311286.

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

It is not a de Polignac number, because 68211385 - 2¹ = 68211383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68211385.

It is not an unprimeable number, because it can be changed into a prime (68211383) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 620049 + ... + 620158.

It is an arithmetic number, because the mean of its divisors is an integer number (11161872).

Almost surely, 2^68211385 is an apocalyptic number.

It is an amenable number.

68211385 is a deficient number, since it is larger than the sum of its proper divisors (21083591).

68211385 is a wasteful number, since it uses less digits than its factorization.

68211385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240223.

The product of its digits is 11520, while the sum is 34.

The square root of 68211385 is about 8259.0184041446. The cubic root of 68211385 is about 408.5880141965.

Subtracting from 68211385 its reverse (58311286), we obtain a palindrome (9900099).

The spelling of 68211385 in words is "sixty-eight million, two hundred eleven thousand, three hundred eighty-five".