68188849 has 4 divisors (see below), whose sum is σ = 68326000. Its totient is φ = 68051700.

The previous prime is 68188829. The next prime is 68188877. The reversal of 68188849 is 94888186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68188849 - 2¹³ = 68180657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68188796 and 68188805.

It is not an unprimeable number, because it can be changed into a prime (68188829) 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, 67827 + ... + 68824.

It is an arithmetic number, because the mean of its divisors is an integer number (17081500).

Almost surely, 2^68188849 is an apocalyptic number.

It is an amenable number.

68188849 is a deficient number, since it is larger than the sum of its proper divisors (137151).

68188849 is a wasteful number, since it uses less digits than its factorization.

68188849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137150.

The product of its digits is 884736, while the sum is 52.

The square root of 68188849 is about 8257.6539646561. The cubic root of 68188849 is about 408.5430121599.

The spelling of 68188849 in words is "sixty-eight million, one hundred eighty-eight thousand, eight hundred forty-nine".