68447770 has 32 divisors (see below), whose sum is σ = 129548160. Its totient is φ = 25988160.

The previous prime is 68447719. The next prime is 68447773. The reversal of 68447770 is 7774486.

It is not an unprimeable number, because it can be changed into a prime (68447773) 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 15 ways as a sum of consecutive naturals, for example, 30900 + ... + 33040.

It is an arithmetic number, because the mean of its divisors is an integer number (4048380).

Almost surely, 2^68447770 is an apocalyptic number.

68447770 is a deficient number, since it is larger than the sum of its proper divisors (61100390).

68447770 is a wasteful number, since it uses less digits than its factorization.

68447770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310.

The product of its (nonzero) digits is 263424, while the sum is 43.

The square root of 68447770 is about 8273.3167472302. The cubic root of 68447770 is about 409.0594541771.

The spelling of 68447770 in words is "sixty-eight million, four hundred forty-seven thousand, seven hundred seventy".