68534215 has 4 divisors (see below), whose sum is σ = 82241064. Its totient is φ = 54827368.

The previous prime is 68534209. The next prime is 68534231. The reversal of 68534215 is 51243586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68534215 - 2¹⁹ = 68009927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6853417 + ... + 6853426.

It is an arithmetic number, because the mean of its divisors is an integer number (20560266).

Almost surely, 2^68534215 is an apocalyptic number.

68534215 is a deficient number, since it is larger than the sum of its proper divisors (13706849).

68534215 is a wasteful number, since it uses less digits than its factorization.

68534215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13706848.

The product of its digits is 28800, while the sum is 34.

The square root of 68534215 is about 8278.5394243188. The cubic root of 68534215 is about 409.2315867325.

The spelling of 68534215 in words is "sixty-eight million, five hundred thirty-four thousand, two hundred fifteen".