68847889 has 4 divisors (see below), whose sum is σ = 75106800. Its totient is φ = 62588980.

The previous prime is 68847881. The next prime is 68847907. The reversal of 68847889 is 98874886.

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 68847889 - 2³ = 68847881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68847881) 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, 3129439 + ... + 3129460.

It is an arithmetic number, because the mean of its divisors is an integer number (18776700).

Almost surely, 2^68847889 is an apocalyptic number.

It is an amenable number.

68847889 is a deficient number, since it is larger than the sum of its proper divisors (6258911).

68847889 is a wasteful number, since it uses less digits than its factorization.

68847889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258910.

The product of its digits is 6193152, while the sum is 58.

The square root of 68847889 is about 8297.4628049784. The cubic root of 68847889 is about 409.8549734936.

The spelling of 68847889 in words is "sixty-eight million, eight hundred forty-seven thousand, eight hundred eighty-nine".