68218410 has 64 divisors (see below), whose sum is σ = 177367680. Its totient is φ = 16692480.

The previous prime is 68218387. The next prime is 68218421. The reversal of 68218410 is 1481286.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 81876 + ... + 82704.

It is an arithmetic number, because the mean of its divisors is an integer number (2771370).

Almost surely, 2^68218410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68218410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88683840).

68218410 is an abundant number, since it is smaller than the sum of its proper divisors (109149270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68218410 is a wasteful number, since it uses less digits than its factorization.

68218410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 68218410 is about 8259.4436858665. The cubic root of 68218410 is about 408.6020403607.

Adding to 68218410 its reverse (1481286), we get a palindrome (69699696).

The spelling of 68218410 in words is "sixty-eight million, two hundred eighteen thousand, four hundred ten".