68167808 has 16 divisors (see below), whose sum is σ = 135803310. Its totient is φ = 34083840.

The previous prime is 68167783. The next prime is 68167811. The reversal of 68167808 is 80876186.

It can be written as a sum of positive squares in only one way, i.e., 45050944 + 23116864 = 6712^2 + 4808^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-3 number, since 3×68167808³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266153 + ... + 266408.

Almost surely, 2^68167808 is an apocalyptic number.

It is an amenable number.

68167808 is a deficient number, since it is larger than the sum of its proper divisors (67635502).

68167808 is an equidigital number, since it uses as much as digits as its factorization.

68167808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532575 (or 532563 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 68167808 is about 8256.3798362236. The cubic root of 68167808 is about 408.5009865307.

The spelling of 68167808 in words is "sixty-eight million, one hundred sixty-seven thousand, eight hundred eight".