68642827 has 4 divisors (see below), whose sum is σ = 74883096. Its totient is φ = 62402560.

The previous prime is 68642813. The next prime is 68642831. The reversal of 68642827 is 72824686.

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

It is not a de Polignac number, because 68642827 - 2¹¹ = 68640779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68642857) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3120118 + ... + 3120139.

It is an arithmetic number, because the mean of its divisors is an integer number (18720774).

Almost surely, 2^68642827 is an apocalyptic number.

68642827 is a deficient number, since it is larger than the sum of its proper divisors (6240269).

68642827 is a wasteful number, since it uses less digits than its factorization.

68642827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240268.

The product of its digits is 258048, while the sum is 43.

The square root of 68642827 is about 8285.0966801842. The cubic root of 68642827 is about 409.4476540008.

The spelling of 68642827 in words is "sixty-eight million, six hundred forty-two thousand, eight hundred twenty-seven".