68181307 has 8 divisors (see below), whose sum is σ = 70891520. Its totient is φ = 65503080.

The previous prime is 68181301. The next prime is 68181313. The reversal of 68181307 is 70318186.

It is an interprime number because it is at equal distance from previous prime (68181301) and next prime (68181313).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68181307 - 2³ = 68181299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68181301) 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, 3603 + ... + 12220.

It is an arithmetic number, because the mean of its divisors is an integer number (8861440).

Almost surely, 2^68181307 is an apocalyptic number.

68181307 is a deficient number, since it is larger than the sum of its proper divisors (2710213).

68181307 is a wasteful number, since it uses less digits than its factorization.

68181307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15993.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 68181307 is about 8257.1972847934. The cubic root of 68181307 is about 408.5279493598.

The spelling of 68181307 in words is "sixty-eight million, one hundred eighty-one thousand, three hundred seven".