68739827 has 4 divisors (see below), whose sum is σ = 74027520. Its totient is φ = 63452136.

The previous prime is 68739817. The next prime is 68739859. The reversal of 68739827 is 72893786.

It is a happy number.

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 68739827 - 2²⁴ = 51962611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68739817) 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, 2643827 + ... + 2643852.

It is an arithmetic number, because the mean of its divisors is an integer number (18506880).

Almost surely, 2^68739827 is an apocalyptic number.

68739827 is a deficient number, since it is larger than the sum of its proper divisors (5287693).

68739827 is a wasteful number, since it uses less digits than its factorization.

68739827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287692.

The product of its digits is 1016064, while the sum is 50.

The square root of 68739827 is about 8290.9484982118. The cubic root of 68739827 is about 409.6404283514.

The spelling of 68739827 in words is "sixty-eight million, seven hundred thirty-nine thousand, eight hundred twenty-seven".