68006021 has 8 divisors (see below), whose sum is σ = 69177024. Its totient is φ = 66844800.

The previous prime is 68005979. The next prime is 68006023. The reversal of 68006021 is 12060086.

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 68006021 - 2¹⁴ = 67989637 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 (68006023) 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, 12326 + ... + 16968.

It is an arithmetic number, because the mean of its divisors is an integer number (8647128).

Almost surely, 2^68006021 is an apocalyptic number.

It is an amenable number.

68006021 is a deficient number, since it is larger than the sum of its proper divisors (1171003).

68006021 is a wasteful number, since it uses less digits than its factorization.

68006021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 68006021 is about 8246.5763199039. The cubic root of 68006021 is about 408.1775567212.

It can be divided in two parts, 6800 and 6021, that added together give a palindrome (12821).

The spelling of 68006021 in words is "sixty-eight million, six thousand, twenty-one".