68308867 has 4 divisors (see below), whose sum is σ = 74518776. Its totient is φ = 62098960.

The previous prime is 68308861. The next prime is 68308913. The reversal of 68308867 is 76880386.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68308867 - 2³ = 68308859 is a prime.

It is a super-2 number, since 2×68308867² = 9332202621647378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68308861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3104938 + ... + 3104959.

It is an arithmetic number, because the mean of its divisors is an integer number (18629694).

Almost surely, 2^68308867 is an apocalyptic number.

68308867 is a deficient number, since it is larger than the sum of its proper divisors (6209909).

68308867 is a wasteful number, since it uses less digits than its factorization.

68308867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6209908.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 68308867 is about 8264.9178459317. The cubic root of 68308867 is about 408.7825614750.

The spelling of 68308867 in words is "sixty-eight million, three hundred eight thousand, eight hundred sixty-seven".