67144365 has 12 divisors (see below), whose sum is σ = 116383644. Its totient is φ = 35810304.

The previous prime is 67144333. The next prime is 67144379. The reversal of 67144365 is 56344176.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29909961 + 37234404 = 5469^2 + 6102^2 .

It is not a de Polignac number, because 67144365 - 2⁵ = 67144333 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 746004 + ... + 746093.

It is an arithmetic number, because the mean of its divisors is an integer number (9698637).

Almost surely, 2^67144365 is an apocalyptic number.

It is an amenable number.

67144365 is a deficient number, since it is larger than the sum of its proper divisors (49239279).

67144365 is a wasteful number, since it uses less digits than its factorization.

67144365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492108 (or 1492105 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 67144365 is about 8194.1665225940. The cubic root of 67144365 is about 406.4463149012.

The spelling of 67144365 in words is "sixty-seven million, one hundred forty-four thousand, three hundred sixty-five".