67140868 has 12 divisors (see below), whose sum is σ = 117617500. Its totient is φ = 33535872.

The previous prime is 67140817. The next prime is 67140869. The reversal of 67140868 is 86804176.

It can be written as a sum of positive squares in 2 ways, for example, as 55086084 + 12054784 = 7422^2 + 3472^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67140868.

It is not an unprimeable number, because it can be changed into a prime (67140869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3993 + ... + 12256.

Almost surely, 2^67140868 is an apocalyptic number.

It is an amenable number.

67140868 is a deficient number, since it is larger than the sum of its proper divisors (50476632).

67140868 is a wasteful number, since it uses less digits than its factorization.

67140868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17286 (or 17284 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 67140868 is about 8193.9531363073. The cubic root of 67140868 is about 406.4392586256.

The spelling of 67140868 in words is "sixty-seven million, one hundred forty thousand, eight hundred sixty-eight".