67788136 has 16 divisors (see below), whose sum is σ = 136880100. Its totient is φ = 31286784.

The previous prime is 67788101. The next prime is 67788137. The reversal of 67788136 is 63188776.

It can be written as a sum of positive squares in 2 ways, for example, as 56160036 + 11628100 = 7494^2 + 3410^2 .

It is not an unprimeable number, because it can be changed into a prime (67788137) 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 3 ways as a sum of consecutive naturals, for example, 325801 + ... + 326008.

Almost surely, 2^67788136 is an apocalyptic number.

It is an amenable number.

67788136 is an abundant number, since it is smaller than the sum of its proper divisors (69091964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67788136 is a wasteful number, since it uses less digits than its factorization.

67788136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651828 (or 651824 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The square root of 67788136 is about 8233.3550876906. The cubic root of 67788136 is about 407.7411692969.

The spelling of 67788136 in words is "sixty-seven million, seven hundred eighty-eight thousand, one hundred thirty-six".