68726889 has 24 divisors (see below), whose sum is σ = 123769152. Its totient is φ = 35701920.

The previous prime is 68726887. The next prime is 68726891. The reversal of 68726889 is 98862786.

It is an interprime number because it is at equal distance from previous prime (68726887) and next prime (68726891).

It is not a de Polignac number, because 68726889 - 2¹ = 68726887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68726887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48894 + ... + 50279.

It is an arithmetic number, because the mean of its divisors is an integer number (5157048).

Almost surely, 2^68726889 is an apocalyptic number.

It is an amenable number.

68726889 is a deficient number, since it is larger than the sum of its proper divisors (55042263).

68726889 is a wasteful number, since it uses less digits than its factorization.

68726889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99197 (or 99194 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 68726889 is about 8290.1682130099. The cubic root of 68726889 is about 409.6147263160.

The spelling of 68726889 in words is "sixty-eight million, seven hundred twenty-six thousand, eight hundred eighty-nine".