67279989 has 12 divisors (see below), whose sum is σ = 104352864. Its totient is φ = 38445624.

The previous prime is 67279963. The next prime is 67280009. The reversal of 67279989 is 98997276.

It is not a de Polignac number, because 67279989 - 2⁸ = 67279733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67279789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228697 + ... + 228990.

It is an arithmetic number, because the mean of its divisors is an integer number (8696072).

Almost surely, 2^67279989 is an apocalyptic number.

It is an amenable number.

67279989 is a deficient number, since it is larger than the sum of its proper divisors (37072875).

67279989 is a wasteful number, since it uses less digits than its factorization.

67279989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457704 (or 457697 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 57.

The square root of 67279989 is about 8202.4379912316. The cubic root of 67279989 is about 406.7197893367.

The spelling of 67279989 in words is "sixty-seven million, two hundred seventy-nine thousand, nine hundred eighty-nine".