68184136 has 8 divisors (see below), whose sum is σ = 127845270. Its totient is φ = 34092064.

The previous prime is 68184131. The next prime is 68184139. The reversal of 68184136 is 63148186.

It can be written as a sum of positive squares in only one way, i.e., 64160100 + 4024036 = 8010^2 + 2006^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 68184095 and 68184104.

It is not an unprimeable number, because it can be changed into a prime (68184131) 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, 4261501 + ... + 4261516.

Almost surely, 2^68184136 is an apocalyptic number.

It is an amenable number.

68184136 is a deficient number, since it is larger than the sum of its proper divisors (59661134).

68184136 is a wasteful number, since it uses less digits than its factorization.

68184136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8523023 (or 8523019 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 68184136 is about 8257.3685881157. The cubic root of 68184136 is about 408.5335995379.

The spelling of 68184136 in words is "sixty-eight million, one hundred eighty-four thousand, one hundred thirty-six".