67144036 has 6 divisors (see below), whose sum is σ = 117502070. Its totient is φ = 33572016.

The previous prime is 67144031. The next prime is 67144069. The reversal of 67144036 is 63044176.

It can be written as a sum of positive squares in only one way, i.e., 63904036 + 3240000 = 7994^2 + 1800^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67143989 and 67144007.

It is not an unprimeable number, because it can be changed into a prime (67144031) 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 as a sum of consecutive naturals, namely, 8393001 + ... + 8393008.

Almost surely, 2^67144036 is an apocalyptic number.

It is an amenable number.

67144036 is a deficient number, since it is larger than the sum of its proper divisors (50358034).

67144036 is a wasteful number, since it uses less digits than its factorization.

67144036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16786013 (or 16786011 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 67144036 is about 8194.1464473123. The cubic root of 67144036 is about 406.4456510527.

The spelling of 67144036 in words is "sixty-seven million, one hundred forty-four thousand, thirty-six".