68129216 has 14 divisors (see below), whose sum is σ = 135194040. Its totient is φ = 34064576.

The previous prime is 68129213. The next prime is 68129219. The reversal of 68129216 is 61292186.

It is an interprime number because it is at equal distance from previous prime (68129213) and next prime (68129219).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68129213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532196 + ... + 532323.

Almost surely, 2^68129216 is an apocalyptic number.

It is an amenable number.

68129216 is a deficient number, since it is larger than the sum of its proper divisors (67064824).

68129216 is a wasteful number, since it uses less digits than its factorization.

68129216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064531 (or 1064521 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 68129216 is about 8254.0424035741. The cubic root of 68129216 is about 408.4238834402.

The spelling of 68129216 in words is "sixty-eight million, one hundred twenty-nine thousand, two hundred sixteen".