68081320 has 32 divisors (see below), whose sum is σ = 156922920. Its totient is φ = 26567680.

The previous prime is 68081297. The next prime is 68081347. The reversal of 68081320 is 2318086.

68081320 = T₃₅₉ + T₃₆₀ + ... + T₇₆₈.

It can be written as a sum of positive squares in 4 ways, for example, as 45670564 + 22410756 = 6758^2 + 4734^2 .

It is a super-2 number, since 2×68081320² = 9270132265884800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19117 + ... + 22396.

Almost surely, 2^68081320 is an apocalyptic number.

It is an amenable number.

68081320 is an abundant number, since it is smaller than the sum of its proper divisors (88841600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68081320 is a wasteful number, since it uses less digits than its factorization.

68081320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41565 (or 41561 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 68081320 is about 8251.1405272241. The cubic root of 68081320 is about 408.3281513526.

It can be divided in two parts, 6808 and 1320, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 68081320 in words is "sixty-eight million, eighty-one thousand, three hundred twenty".