68723889 has 16 divisors (see below), whose sum is σ = 99047424. Its totient is φ = 42134400.

The previous prime is 68723887. The next prime is 68723903. The reversal of 68723889 is 98832786.

It is not a de Polignac number, because 68723889 - 2¹ = 68723887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68723887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7824 + ... + 14094.

It is an arithmetic number, because the mean of its divisors is an integer number (6190464).

Almost surely, 2^68723889 is an apocalyptic number.

It is an amenable number.

68723889 is a deficient number, since it is larger than the sum of its proper divisors (30323535).

68723889 is a wasteful number, since it uses less digits than its factorization.

68723889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568.

The product of its digits is 1161216, while the sum is 51.

The square root of 68723889 is about 8289.9872738141. The cubic root of 68723889 is about 409.6087661933.

The spelling of 68723889 in words is "sixty-eight million, seven hundred twenty-three thousand, eight hundred eighty-nine".