68537686 has 8 divisors (see below), whose sum is σ = 117493200. Its totient is φ = 29373288.

The previous prime is 68537663. The next prime is 68537713. The reversal of 68537686 is 68673586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 2447761 + ... + 2447788.

It is an arithmetic number, because the mean of its divisors is an integer number (14686650).

Almost surely, 2^68537686 is an apocalyptic number.

68537686 is a deficient number, since it is larger than the sum of its proper divisors (48955514).

68537686 is a wasteful number, since it uses less digits than its factorization.

68537686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4895558.

The product of its digits is 1451520, while the sum is 49.

The square root of 68537686 is about 8278.7490600936. The cubic root of 68537686 is about 409.2384952957.

The spelling of 68537686 in words is "sixty-eight million, five hundred thirty-seven thousand, six hundred eighty-six".