68980689 has 12 divisors (see below), whose sum is σ = 101043072. Its totient is φ = 45339000.

The previous prime is 68980687. The next prime is 68980699. The reversal of 68980689 is 98608986.

It is not a de Polignac number, because 68980689 - 2¹ = 68980687 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68980687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53337 + ... + 54614.

It is an arithmetic number, because the mean of its divisors is an integer number (8420256).

Almost surely, 2^68980689 is an apocalyptic number.

It is an amenable number.

68980689 is a deficient number, since it is larger than the sum of its proper divisors (32062383).

68980689 is a wasteful number, since it uses less digits than its factorization.

68980689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108028 (or 108025 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 68980689 is about 8305.4613959731. The cubic root of 68980689 is about 410.1183259510.

The spelling of 68980689 in words is "sixty-eight million, nine hundred eighty thousand, six hundred eighty-nine".