68087129 has 8 divisors (see below), whose sum is σ = 76673280. Its totient is φ = 59900400.

The previous prime is 68087111. The next prime is 68087137. The reversal of 68087129 is 92178086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68087129 - 2⁸ = 68086873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68087179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99494 + ... + 100175.

It is an arithmetic number, because the mean of its divisors is an integer number (9584160).

Almost surely, 2^68087129 is an apocalyptic number.

It is an amenable number.

68087129 is a deficient number, since it is larger than the sum of its proper divisors (8586151).

68087129 is a wasteful number, since it uses less digits than its factorization.

68087129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199711.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 68087129 is about 8251.4925316575. The cubic root of 68087129 is about 408.3397644783.

The spelling of 68087129 in words is "sixty-eight million, eighty-seven thousand, one hundred twenty-nine".