68067081 has 8 divisors (see below), whose sum is σ = 100840160. Its totient is φ = 45378036.

The previous prime is 68067067. The next prime is 68067091. The reversal of 68067081 is 18076086.

It is not a de Polignac number, because 68067081 - 2⁶ = 68067017 is a prime.

It is a super-2 number, since 2×68067081² = 9266255031721122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68067091) 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, 1260475 + ... + 1260528.

It is an arithmetic number, because the mean of its divisors is an integer number (12605020).

Almost surely, 2^68067081 is an apocalyptic number.

It is an amenable number.

68067081 is a deficient number, since it is larger than the sum of its proper divisors (32773079).

68067081 is a wasteful number, since it uses less digits than its factorization.

68067081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521012 (or 2521006 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 68067081 is about 8250.2776316922. The cubic root of 68067081 is about 408.2996825062.

The spelling of 68067081 in words is "sixty-eight million, sixty-seven thousand, eighty-one".