68218434 has 24 divisors (see below), whose sum is σ = 148719792. Its totient is φ = 22599000.

The previous prime is 68218429. The next prime is 68218441. The reversal of 68218434 is 43481286.

68218434 is a `hidden beast` number, since 6 + 8 + 218 + 434 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8692 + ... + 14559.

It is an arithmetic number, because the mean of its divisors is an integer number (6196658).

Almost surely, 2^68218434 is an apocalyptic number.

68218434 is an abundant number, since it is smaller than the sum of its proper divisors (80501358).

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

68218434 is a wasteful number, since it uses less digits than its factorization.

68218434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23422 (or 23419 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 68218434 is about 8259.4451387487. The cubic root of 68218434 is about 408.6020882776.

The spelling of 68218434 in words is "sixty-eight million, two hundred eighteen thousand, four hundred thirty-four".