68866307 has 4 divisors (see below), whose sum is σ = 69392136. Its totient is φ = 68340480.

The previous prime is 68866277. The next prime is 68866313. The reversal of 68866307 is 70366886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70366886 = 2 ⋅35183443.

It is a cyclic number.

It is not a de Polignac number, because 68866307 - 2⁶ = 68866243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68866367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262718 + ... + 262979.

It is an arithmetic number, because the mean of its divisors is an integer number (17348034).

Almost surely, 2^68866307 is an apocalyptic number.

68866307 is a deficient number, since it is larger than the sum of its proper divisors (525829).

68866307 is a wasteful number, since it uses less digits than its factorization.

68866307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525828.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 68866307 is about 8298.5725881021. The cubic root of 68866307 is about 409.8915179976.

The spelling of 68866307 in words is "sixty-eight million, eight hundred sixty-six thousand, three hundred seven".