67139589 has 16 divisors (see below), whose sum is σ = 99261504. Its totient is φ = 40022400.

The previous prime is 67139587. The next prime is 67139593. The reversal of 67139589 is 98593176.

It is not a de Polignac number, because 67139589 - 2¹ = 67139587 is a prime.

It is a super-2 number, since 2×67139589² = 9015448822177842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67139587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14664 + ... + 18689.

It is an arithmetic number, because the mean of its divisors is an integer number (6203844).

Almost surely, 2^67139589 is an apocalyptic number.

It is an amenable number.

67139589 is a deficient number, since it is larger than the sum of its proper divisors (32121915).

67139589 is a wasteful number, since it uses less digits than its factorization.

67139589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33428.

The product of its digits is 408240, while the sum is 48.

The square root of 67139589 is about 8193.8750905783. The cubic root of 67139589 is about 406.4366777876.

It can be divided in two parts, 67 and 139589, that added together give a triangular number (139656 = T₅₂₈).

The spelling of 67139589 in words is "sixty-seven million, one hundred thirty-nine thousand, five hundred eighty-nine".