68916136 has 8 divisors (see below), whose sum is σ = 129217770. Its totient is φ = 34458064.

The previous prime is 68916109. The next prime is 68916137. The reversal of 68916136 is 63161986.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 4435236 = 8030^2 + 2106^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68916137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4307251 + ... + 4307266.

Almost surely, 2^68916136 is an apocalyptic number.

It is an amenable number.

68916136 is a deficient number, since it is larger than the sum of its proper divisors (60301634).

68916136 is a wasteful number, since it uses less digits than its factorization.

68916136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8614523 (or 8614519 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 68916136 is about 8301.5743085273. The cubic root of 68916136 is about 409.9903547205.

The spelling of 68916136 in words is "sixty-eight million, nine hundred sixteen thousand, one hundred thirty-six".