68215434 has 64 divisors (see below), whose sum is σ = 166517760. Its totient is φ = 18195840.

The previous prime is 68215423. The next prime is 68215487. The reversal of 68215434 is 43451286.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68215395 and 68215404.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57669 + ... + 58839.

It is an arithmetic number, because the mean of its divisors is an integer number (2601840).

Almost surely, 2^68215434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68215434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83258880).

68215434 is an abundant number, since it is smaller than the sum of its proper divisors (98302326).

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

68215434 is a wasteful number, since it uses less digits than its factorization.

68215434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275.

The product of its digits is 23040, while the sum is 33.

The square root of 68215434 is about 8259.2635264895. The cubic root of 68215434 is about 408.5960985758.

The spelling of 68215434 in words is "sixty-eight million, two hundred fifteen thousand, four hundred thirty-four".