68542527 has 4 divisors (see below), whose sum is σ = 91390040. Its totient is φ = 45695016.

The previous prime is 68542511. The next prime is 68542531. The reversal of 68542527 is 72524586.

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

It is not a de Polignac number, because 68542527 - 2⁴ = 68542511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68542577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11423752 + ... + 11423757.

It is an arithmetic number, because the mean of its divisors is an integer number (22847510).

Almost surely, 2^68542527 is an apocalyptic number.

68542527 is a deficient number, since it is larger than the sum of its proper divisors (22847513).

68542527 is a wasteful number, since it uses less digits than its factorization.

68542527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22847512.

The product of its digits is 134400, while the sum is 39.

The square root of 68542527 is about 8279.0414300207. The cubic root of 68542527 is about 409.2481302718.

The spelling of 68542527 in words is "sixty-eight million, five hundred forty-two thousand, five hundred twenty-seven".