68989767 has 32 divisors (see below), whose sum is σ = 115858944. Its totient is φ = 35472000.

The previous prime is 68989747. The next prime is 68989807. The reversal of 68989767 is 76798986.

It is not a de Polignac number, because 68989767 - 2⁷ = 68989639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68989767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68989747) 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 31 ways as a sum of consecutive naturals, for example, 21853 + ... + 24809.

It is an arithmetic number, because the mean of its divisors is an integer number (3620592).

Almost surely, 2^68989767 is an apocalyptic number.

68989767 is a deficient number, since it is larger than the sum of its proper divisors (46869177).

68989767 is a wasteful number, since it uses less digits than its factorization.

68989767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079.

The product of its digits is 9144576, while the sum is 60.

The square root of 68989767 is about 8306.0078858619. The cubic root of 68989767 is about 410.1363159658.

The spelling of 68989767 in words is "sixty-eight million, nine hundred eighty-nine thousand, seven hundred sixty-seven".