68839837 has 4 divisors (see below), whose sum is σ = 75098016. Its totient is φ = 62581660.

The previous prime is 68839811. The next prime is 68839873. The reversal of 68839837 is 73893886.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68839837 - 2⁷ = 68839709 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 (68839807) 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, 3129073 + ... + 3129094.

It is an arithmetic number, because the mean of its divisors is an integer number (18774504).

Almost surely, 2^68839837 is an apocalyptic number.

It is an amenable number.

68839837 is a deficient number, since it is larger than the sum of its proper divisors (6258179).

68839837 is a wasteful number, since it uses less digits than its factorization.

68839837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258178.

The product of its digits is 1741824, while the sum is 52.

The square root of 68839837 is about 8296.9775822284. The cubic root of 68839837 is about 409.8389948826.

The spelling of 68839837 in words is "sixty-eight million, eight hundred thirty-nine thousand, eight hundred thirty-seven".