68012849 has 4 divisors (see below), whose sum is σ = 68184564. Its totient is φ = 67841136.

The previous prime is 68012843. The next prime is 68012873. The reversal of 68012849 is 94821086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94821086 = 2 ⋅47410543.

It can be written as a sum of positive squares in 2 ways, for example, as 31192225 + 36820624 = 5585^2 + 6068^2 .

It is a cyclic number.

It is not a de Polignac number, because 68012849 - 2¹² = 68008753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68012843) 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, 85262 + ... + 86055.

It is an arithmetic number, because the mean of its divisors is an integer number (17046141).

Almost surely, 2^68012849 is an apocalyptic number.

It is an amenable number.

68012849 is a deficient number, since it is larger than the sum of its proper divisors (171715).

68012849 is a wasteful number, since it uses less digits than its factorization.

68012849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171714.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 68012849 is about 8246.9902994971. The cubic root of 68012849 is about 408.1912169974.

The spelling of 68012849 in words is "sixty-eight million, twelve thousand, eight hundred forty-nine".