68999011 has 4 divisors (see below), whose sum is σ = 71998992. Its totient is φ = 65999032.

The previous prime is 68999003. The next prime is 68999017. The reversal of 68999011 is 11099986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11099986 = 2 ⋅5549993.

It is a cyclic number.

It is not a de Polignac number, because 68999011 - 2³ = 68999003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68999017) 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, 1499956 + ... + 1500001.

It is an arithmetic number, because the mean of its divisors is an integer number (17999748).

Almost surely, 2^68999011 is an apocalyptic number.

68999011 is a deficient number, since it is larger than the sum of its proper divisors (2999981).

68999011 is a wasteful number, since it uses less digits than its factorization.

68999011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2999980.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 68999011 is about 8306.5643319004. The cubic root of 68999011 is about 410.1546333238.

The spelling of 68999011 in words is "sixty-eight million, nine hundred ninety-nine thousand, eleven".