68421086 has 4 divisors (see below), whose sum is σ = 102631632. Its totient is φ = 34210542.

The previous prime is 68421079. The next prime is 68421091. The reversal of 68421086 is 68012486.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17105270 + ... + 17105273.

It is an arithmetic number, because the mean of its divisors is an integer number (25657908).

Almost surely, 2^68421086 is an apocalyptic number.

68421086 is a deficient number, since it is larger than the sum of its proper divisors (34210546).

68421086 is a wasteful number, since it uses less digits than its factorization.

68421086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34210545.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 68421086 is about 8271.7039357076. The cubic root of 68421086 is about 409.0062907153.

The spelling of 68421086 in words is "sixty-eight million, four hundred twenty-one thousand, eighty-six".