68376021 has 16 divisors (see below), whose sum is σ = 106320000. Its totient is φ = 39071424.

The previous prime is 68376017. The next prime is 68376029. The reversal of 68376021 is 12067386.

It is not a de Polignac number, because 68376021 - 2² = 68376017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68376029) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 32196 + ... + 34253.

It is an arithmetic number, because the mean of its divisors is an integer number (6645000).

Almost surely, 2^68376021 is an apocalyptic number.

It is an amenable number.

68376021 is a deficient number, since it is larger than the sum of its proper divisors (37943979).

68376021 is an equidigital number, since it uses as much as digits as its factorization.

68376021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66473 (or 66459 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 68376021 is about 8268.9794412612. The cubic root of 68376021 is about 408.9164747550.

The spelling of 68376021 in words is "sixty-eight million, three hundred seventy-six thousand, twenty-one".