67000249 has 4 divisors (see below), whose sum is σ = 67043700. Its totient is φ = 66956800.

The previous prime is 67000217. The next prime is 67000309. The reversal of 67000249 is 94200076.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63313849 + 3686400 = 7957^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 67000249 - 2⁵ = 67000217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67000049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19324 + ... + 22525.

It is an arithmetic number, because the mean of its divisors is an integer number (16760925).

Almost surely, 2^67000249 is an apocalyptic number.

It is an amenable number.

67000249 is a deficient number, since it is larger than the sum of its proper divisors (43451).

67000249 is a wasteful number, since it uses less digits than its factorization.

67000249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43450.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 67000249 is about 8185.3679819541. The cubic root of 67000249 is about 406.1553131909.

The spelling of 67000249 in words is "sixty-seven million, two hundred forty-nine", and thus it is an aban number.