68576821 has 8 divisors (see below), whose sum is σ = 70012800. Its totient is φ = 67150080.

The previous prime is 68576813. The next prime is 68576839. The reversal of 68576821 is 12867586.

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

It is a cyclic number.

It is not a de Polignac number, because 68576821 - 2³ = 68576813 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 (68576891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13845 + ... + 18133.

It is an arithmetic number, because the mean of its divisors is an integer number (8751600).

Almost surely, 2^68576821 is an apocalyptic number.

It is an amenable number.

68576821 is a deficient number, since it is larger than the sum of its proper divisors (1435979).

68576821 is a wasteful number, since it uses less digits than its factorization.

68576821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4619.

The product of its digits is 161280, while the sum is 43.

The square root of 68576821 is about 8281.1123045156. The cubic root of 68576821 is about 409.3163721647.

The spelling of 68576821 in words is "sixty-eight million, five hundred seventy-six thousand, eight hundred twenty-one".