68166889 has 48 divisors (see below), whose sum is σ = 91108800. Its totient is φ = 50512896.

The previous prime is 68166881. The next prime is 68166899. The reversal of 68166889 is 98866186.

It is not a de Polignac number, because 68166889 - 2³ = 68166881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68166881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 933757 + ... + 933829.

It is an arithmetic number, because the mean of its divisors is an integer number (1898100).

Almost surely, 2^68166889 is an apocalyptic number.

It is an amenable number.

68166889 is a deficient number, since it is larger than the sum of its proper divisors (22941911).

68166889 is a wasteful number, since it uses less digits than its factorization.

68166889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 175 counting only the distinct ones).

The product of its digits is 995328, while the sum is 52.

The square root of 68166889 is about 8256.3241821043. The cubic root of 68166889 is about 408.4991507957.

The spelling of 68166889 in words is "sixty-eight million, one hundred sixty-six thousand, eight hundred eighty-nine".