67145533 has 24 divisors (see below), whose sum is σ = 87792768. Its totient is φ = 50805216.

The previous prime is 67145531. The next prime is 67145543. The reversal of 67145533 is 33554176.

It is not a de Polignac number, because 67145533 - 2¹ = 67145531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67145531) 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 23 ways as a sum of consecutive naturals, for example, 12360 + ... + 16942.

It is an arithmetic number, because the mean of its divisors is an integer number (3658032).

Almost surely, 2^67145533 is an apocalyptic number.

It is an amenable number.

67145533 is a deficient number, since it is larger than the sum of its proper divisors (20647235).

67145533 is a wasteful number, since it uses less digits than its factorization.

67145533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633 (or 4626 counting only the distinct ones).

The product of its digits is 37800, while the sum is 34.

The square root of 67145533 is about 8194.2377924978. The cubic root of 67145533 is about 406.4486716467.

The spelling of 67145533 in words is "sixty-seven million, one hundred forty-five thousand, five hundred thirty-three".