68485821 has 8 divisors (see below), whose sum is σ = 91356864. Its totient is φ = 45636000.

The previous prime is 68485817. The next prime is 68485871. The reversal of 68485821 is 12858486.

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

It is not a de Polignac number, because 68485821 - 2² = 68485817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68485871) 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 7 ways as a sum of consecutive naturals, for example, 5200 + ... + 12806.

It is an arithmetic number, because the mean of its divisors is an integer number (11419608).

Almost surely, 2^68485821 is an apocalyptic number.

It is an amenable number.

68485821 is a deficient number, since it is larger than the sum of its proper divisors (22871043).

68485821 is a wasteful number, since it uses less digits than its factorization.

68485821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10611.

The product of its digits is 122880, while the sum is 42.

The square root of 68485821 is about 8275.6160495760. The cubic root of 68485821 is about 409.1352406144.

The spelling of 68485821 in words is "sixty-eight million, four hundred eighty-five thousand, eight hundred twenty-one".